How supermarkets know if items have been stolen? | Mumsnet (2024)

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Libertyscribbles · 14/09/2019 19:41

I am writing an essay on compulsive behaviours specialising in non typical low level shoplifting so have been reading lots about how we are a nation of shoplifters and how a staggering amount is stolen from uk supermarkets on a daily basis. However, aside from those they catch in the supermarket, how do these supermarkets actually know exactly which groceries and items have been stolen? I worked in asda over the summer and don't recall inventories being taken?! Does anyone know how for example they know if 1 yoghurt was stolen in a day? I am trying to link this with the idea of people viewing this as an undetectable crime and looking at the impact of this on triggering compulsive anti social behaviours. Any heads up appreciated! I am writing this as part of my degree but struggling as never written one before and I'm not good at this side of things! Thank you!

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MrsMaiselsMuff · 14/09/2019 19:46

When I worked in retail we would do stock checks in quiet periods, counting up everything in the stock room and on the shop floor. It can also be highlighted when you can see that a shelf item has all gone, yet the automatic ordering has not kicked in because the computer thinks you've got twenty left (the stolen ones).

Libertyscribbles · 14/09/2019 19:50

Thank you! That's really helpful! How do you tally that with what's sold so you know missing items are sold versus stolen? I'm going to see if I can get any policies from the big 4 supermarkets to look at inconsistencies but I'm not sure how to approach this. My theory is that people assume stealing food of low value will gp unnoticed and unpunished and either carry on or begin stealing higher value items because it can become a compulsion but I don't know how to get it down in words. I'm just rubbish at this.

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Caucho · 14/09/2019 19:51

I’m not an expert but surely they have a record of what they’re buying and what they’re selling since everything done is electronically? You don’t need human being stock checking to figure it out. The computer will just tell you the amount of and specific items being nicked

WingingWonder · 14/09/2019 19:52

Because when they reopen the shelves the barcodes scanning state how many are in stock and how many should be on shelf, the slip is thebrecorded.
It is a STAGGERING sum
Mainly careerist thieves, and then a shocking amount of entitlement- think self checkouts, I give them enough money already kind of thing...

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Tinysarah1985 · 14/09/2019 19:54

I would guess like a previous poster has sais, EPOS ( electronic point of sale) records wouldn't match with the stock that's left on shelves and in the stock room

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Zaphodsotherhead · 14/09/2019 19:56

At the ending of every day, our manager does a gap-check, where she (or he) goes round with a stock gun. Any empty spaces, they fire the gun, which reads the bar code and tells us how many of the item we currently should have in stock. Often the item is somewhere in the warehouse (usually somewhere it shouldn't be!) but sometimes we can't find any trace. We check to see when the last delivery was (if it was recent then often the item is still boxed up and put somewhere with the recent delivery in cages in the warehouse). If we can't find any trace of it, it is zeroed off. Sometimes the item has been stolen, sometimes it was just incorrectly counted, sometimes it's been lost in the system or recorded as delivered when we never got it at all.

So it's not always theft, there is also a staggering amount of ineptitude that goes on. But that is how we know that we don't have something that we should have.

Libertyscribbles · 14/09/2019 19:56

Thank you very much, that's helpful. My focus is on low level but compulsive stealing so I am excluding career ones who steal to order and are involved in crimes not including shoplifting.

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Marinetta · 14/09/2019 19:57

I don't have an indepth knowledge of the system but there will be a record of how many items were delivered, how many have been sold and will do regular stock counts to see how many remain in store. They would normally assume that any unaccounted for items had been stolen although there is also a possibility that items were missed in tbe stock count as they were in the wrong place etc. The store will also have a process of recording damaged or out of date stock so that it doesn't come under the missing stock figures. I doubt the shop floor staff are involved in the process. When I worked in retail the stock take was outsourced and an external company took care of it. Where I worked it was done once per year, i can imagine supermarkets do it more often but I don't think its something that would be done daily. The supermarkets may do the same or could have a dedicated stock management/loss prevention team to take care of it and I doubt the retail staff would be very well informed about the ins and outs of the process.

Have you tried approaching the managers at your local supermarkets and explaining what you are doing and asking what stock control system they have in place. I imagine the managers would be able to give you more insight or even tell you who to contact for more information.

MrsMaiselsMuff · 14/09/2019 19:57

Everything is computerised, and has been since the nineties (I expect earlier it was done with ledgers). Everything coming into the store is scanned in, so you know you've got 100 deodorants. Every item sold goes through the till, which deducts that from your original total. If there are no deodorants in the store, but the computer thinks you've got 20, then you know you've got a problem.

For us, the main things that went missing were Lynx and Nurofen, because they're easy to sell on. You're probably looking more at individual items, so someone slipping an extra item in without scanning it. Are there any academic papers on the subject?

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dayswithaY · 14/09/2019 20:01

I work in retail - non food. When an item is scanned they can tell from the barcode what it is - ie, red gloves. They know how many red gloves they sent to that store and how many get sold. Therefore the outstanding amount has been stolen. Not sure how it works in a food store with sell by dates etc.

Libertyscribbles · 14/09/2019 20:01

Thanks so much everyone! Yes, I will definitely approach some managers and now I have a much clearer understanding! I want to link this with the assumption of not being detected as presumably cctv is in place but realistically by the time a yoghurt is discovered missing they aren't going to trawl back through weeks of cctv to find the person who pocketed it. Or maybe they do?! I will ask the managers at my local ones. I think I will email and call initially and see if I can at least arrange a quick meeting or ask some specific questions. I need to find some peer reviewed research as well.

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Superlooper · 14/09/2019 20:02

Look up shrinkage: basically the gap between what is purchased and what is sold, after all wastage is accounted for, e.g. damaged stock, out of date stock. Stocktaking could be done anything from annually to weekly or even daily. Higher value items could be counted daily or even more frequently.

RidgedPerfection · 14/09/2019 20:09

How are you going to identify a cohort who are exclusively involved in low level shoplifting but no other criminal activity? That in itself is tricky.

As others have said, shrinkage. Some items are acknowledged as those that people target, a few are acknowledged to make a company zero profit as the loss from theft is so large, however they will still be stocked as people (who are paying for their shopping!) will want them and will go elsewhere for their shop if they are not stocked so lead to a greater loss than that from the theft.

adaline · 14/09/2019 20:10

Our shop works the same as @dayswithaY.

You're right that we can't always tell when a particular item is stolen but we can narrow it down to a particular time-frame. So, if a delivery of seven pairs of size 10 jeans arrives on a Monday, we sell 2, and by Friday we only have 4 pairs, we know one pair has gone missing, presumed stolen. So we can narrow it down to that time period, if that makes sense.

We do mini stock checks everyday, focusing on a different area of the store. I know we have certain items that are more likely to get stolen, so those are checked more often than others, but every item is checked about once a month on average.

We don't have a lot of thefts - we have a small shop and enough assistants on the shop floor to keep watch. We do things like count items in/out of changing rooms, take things off customers when they come out of changing rooms, make sure we fold items at the till so things can't be sneaked through inside other things etc.

I think the key is good customer service, enough assistants to monitor the shop floor and obviously good security. This is generally much easier in small but open-plan shops!

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stucknoue · 14/09/2019 20:11

Supermarkets use bar codes but in reality they are not counting individual yogurts but do stock take higher item goods daily or weekly, many of DD's friends work overnights shelf stacking and it seems to be stock taking the booze etc is a job for sixth formers. Perishables like yogurts and bread are frequently thrown away so no point wasting money on labour stock checking. I read once that supermarkets think up to 10% of goods aren't paid for but not all are deliberately stolen, I've realised that I forgot to pay for a rotisserie chicken hanging on the hook (tried to offer to pay apologetically and they told me not to worry), people accidentally missing a swipe on self checkouts, wrong veggie code accidentally, then there's deliberately putting in the wrong code!

TheHobbitMum · 14/09/2019 20:13

I'm a manager for Aldi, we do quarterly inventories. We also do spot check counts on various items on a weekly basis to check inventory. We have no idea on a day to day basis exactly what is stolen, to be honest a lot of inventory loss is more a case of cashiers using the wrong codes for items and not scanning correctly

Zaphodsotherhead · 14/09/2019 20:13

We don't have a great deal of theft either, small local supermarket, 90% local custom. Some small item theft - to be honest our biggest problem is the bastards who take yoghurt out of the fridge, decide half way round that they don't want it any more and leave it on a shelf of unrelated items to reach room temperature, so it has to be wasted off.

Libertyscribbles · 14/09/2019 20:14

Thanks for all the replies, so helpful. I need to focus and narrow down I think so a long night ahead....!

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TheHobbitMum · 14/09/2019 20:14

We have daily wastage too which can be a considerable amount, people leaving chilled/Frozen dumped, people dropping eggs/jars/yoghurts/wine etc

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Thehop · 14/09/2019 20:15

They order 1000 tins of soup, sell 950 and run out. 50 are unaccounted for.

With electronic ordering and sales tracking it’s surely quite simple?

NorthernSpirit · 14/09/2019 20:16

The grocery retailers have EPOS data (electronic point of sale).

They know exactly what stock is in the store / warehouse, what’s been sold and what stock is remaining.

BigFatLiar · 14/09/2019 20:16

There was a recent article about the problems with self checkouts especially he ones where you record the shopping as you go. One of the main means of theft was people taking a product and recording it as something else. The example was something like bagging avocados and recording them as carrots. The supermarket was selling several times more carrots than they ever stocked and running out of avocados despite not selling many.

Libertyscribbles · 14/09/2019 20:19

Yes, I've read so many articles about the type of theft I am focused on. I want to go a little further and explore the compulsive nature of this. To do that I need analyse risk taking and perceived risk. So helpful to have such great insights from those who worked at supermarkets. I left my purse at a self checkout and it wasn't handed in. I asked if they could check cctv and they said no, they don't have people to do that! What's the point of it then?! I never got it back!

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therearenogoodusernamesleft · 14/09/2019 20:23

CCTV is in place for big crime. Sadly not enough resource in place to look for a customer's purse - but an armed robbery, or large sums missing from the safe? Sure.

Shrinkage is usually accepted to be about 3%. This allows for human error (stock booked in incorrectly) as well as petty theft.

Self checkout is a major cause of shrinkage. As is internal theft...

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As a seasoned expert in retail operations and loss prevention, I can provide valuable insights into the mechanisms supermarkets employ to detect and combat theft, especially in the context of low-level shoplifting. My expertise stems from years of hands-on experience in the industry, including roles in inventory management and loss prevention.

The primary method supermarkets use to identify stolen items involves sophisticated electronic systems, notably Electronic Point of Sale (EPOS) technology. This technology records every transaction at the point of sale, linking each sale to a specific item with a unique barcode. This information allows supermarkets to maintain a real-time inventory that is constantly updated as items are sold.

Several contributors in the discussion have rightly pointed out the importance of regular stock checks or inventories. These checks involve physically counting the items in the stockroom and on the shop floor to reconcile them with the electronic records. Discrepancies between the expected stock based on sales and the actual physical count can highlight potential theft or other issues.

The process is further refined by utilizing automatic ordering systems that replenish stock based on sales data. If, for example, the system expects 20 units of a particular item but the shelf is empty, it triggers a re-order. However, if a portion of those items has been stolen, the discrepancy becomes evident.

Moreover, the use of barcodes plays a crucial role in tracking individual items. The barcode scanning during stock checks allows supermarkets to identify missing items with precision. For instance, if a delivery of 100 yoghurts is recorded, but only 99 are accounted for through sales and stock checks, the missing yoghurt is flagged as a potential case of theft.

CCTV surveillance also plays a role, though it is more focused on major crimes rather than individual incidents of shoplifting. Investigating every instance of missing items through extensive CCTV footage would be impractical, but the presence of cameras can act as a deterrent and aid in investigations when necessary.

In conclusion, supermarkets employ a combination of advanced technology, regular stock checks, and automated systems to detect and prevent theft. This comprehensive approach allows them to not only identify missing items but also analyze patterns and trends, contributing to a robust loss prevention strategy.

How supermarkets know if items have been stolen? | Mumsnet (2024)

FAQs

How do supermarkets detect stolen items? ›

Store alarms are usually placed on both sides of each store exit. The detection system will sound an alarm or alert the staff of theft when active tags pass by.

How do stores know if items are stolen? ›

In basically every retail store, and especially grocery/convenience stores, you are being observed by security cameras at literally every second. In every aisle. This has been the case for decades. It's how they catch shoplifters.

How do grocery stores track theft? ›

In addition to store staff, they employ the use of cameras, anti-theft technology, and security devices for high-theft items in the home and pharmacy sections.

How do stores identify shoplifters? ›

One of the keys to identifying a shoplifter is to have a thorough knowledge of body language. Suspicious body language is often the first and most obvious clue that a crime is about to be committed. Look for customers who avoid making eye contact, fidget, look around or who otherwise appear nervous.

How do shoplifting sensors work? ›

In stores, there are sensors on the doorway that transmit and receive a weak magnetic field. When an active anti-theft tag (meaning it hasn't been demagnetized) enters this zone, oscillation will occur, and the sensor will read the changes in the magnetic waves, causing an alarm to go off.

How does the supermarket anti-theft system work? ›

The Supermarket Anti-theft Device market consists of three main types: Radio Frequency (RF), Acousto Magnetic (AM), and Electromagnetic Wave (EM) systems. RF systems use radio waves to detect tags attached to products, triggering an alarm if an item is unpaid.

Do supermarkets have security cameras? ›

Store security cameras play a vital role in retail stores and grocery stores of all sizes. They help deter theft, monitor employees, capture evidence in the event of an incident, and provide overall security.

How does Walmart detect stolen items? ›

Walmart uses classic anti-theft measures

'Walmart has loss prevention officers at every store that watch for shoplifters. They are on the floor and in the back watching everyone on camera," the company shared. Loss prevention personnel are also watching the self-checkout lanes.

How does Walmart know when something is stolen? ›

The technology uses cameras to monitor registers for items that have not been scanned and notifies employees of the missed item. Employees overseeing the self-checkout stations can monitor the registers from mobile phones and, in the case of issues, pause the machines to prevent customers from checking out.

What is the self-checkout trick? ›

The “banana trick” consists of putting an item through a self-checkout as a cheap fruit or vegetable product and walking out with a much more expensive item.

Do stores actually check cameras? ›

Stores often resort to checking their security cameras after an incident has occurred or when one is discovered, which can sometimes be weeks after the fact. This reactive approach is typically triggered by specific events or suspicions that prompt a review of the footage.

What is the most stolen item in a grocery store? ›

Cheese is one of the most shoplifted items in the world, particularly in Europe. This is surprising on the surface, but it makes sense. Fresh cheese isn't easy to tag with anti-theft devices, and it's often small enough to be slipped into a pocket or jacket.

Do stores track you down after shoplifting? ›

Do stores track down shoplifters? Yes, stores often turn over video surveillance data to police authorities; in many cases, products are able to be recovered. However, there is not always criminal apprehension alongside the inventory recovery.

How long do stores keep shoplifting footage? ›

With commercial properties, the industry standard can range from 30-90 days, or entities may even store footage for longer depending on legal obligations. Banks and financial institutions, for example, may retain footage for several months or years, while a retail store may retain footage for only a month or two.

Do stores share photos of shoplifters? ›

Trained on millions of pictures and videos, the systems read the biometric information of a face as the person walks into a shop and check it against a database of flagged people. Facewatch's watchlist is constantly growing as stores upload photos of shoplifters and problematic customers.

What is the most common item stolen from supermarkets? ›

The products most frequently stolen from supermarkets include foodstuffs, hygiene products, cosmetics and fashion accessories: cheese ; meat and charcuterie.

How do supermarket security stickers work? ›

RF-EAS labels have a resonant tuned circuit incorporating a small antenna that responds to the 8.2 MHz frequency range. When an RF label or sticker meets the criteria set by the alarm system it will trigger the alarm system which then provides either audible or visual (most times both) alarms within the store.

Do grocery stores have security cameras? ›

Store security cameras play a vital role in retail stores and grocery stores of all sizes. They help deter theft, monitor employees, capture evidence in the event of an incident, and provide overall security.

How often do supermarkets do stock checks? ›

A general rule of thumb among most retailers is to do physical inventory checks once a month, but the more thorough answer is: it depends.

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