Do Barcodes Set off Alarms


Barcodes do not set off alarms, what activates the alarm is a magnet that is fitted on some products. The magnet is usually placed near the barcode so that cashiers can know where to deactivate (demagnetize) the magnet by simply scanning the item.

Do barcodes set off alarms Overview

If the item is not demagnetized, it will trigger security alarms through the anti-theft sensors on the main door. Once the product has been scanned by the cashier, the bar code system with issue an audible “beep” sound, which verifies the bar code of the specified product has been scanned. Read on to find out do barcodes set off alarms.

How does the alarm go off when you Shoplift?

Do Barcodes Set off Alarms

Below are some of the steps that are followed when you are caught shoplifting:

First, you are reported to the legal authorities and later filed with charges. 


To prevent any risk of shoplifting, security officers normally monitor customers through security surveillance cameras. 


Once you are done shopping, the label on the bought items send a signal to the main door when you try to leave the premises without paying for the product.


If the label on the purchased item is not properly scanned or the magnet is not demagnetized, the tag signals will trigger the security alarms in the shop.

Are There Barcodes in a Store?

Most retail stores use a system called point of sale (POS) to label all of their products. This system requires vendors to upload data about their products to the computer at the store. Once the vendor has uploaded the data, the computer connects it to the barcode.

Then, the customer can easily scan the barcode to purchase that item. Most stores also have UPC and EAN codes on their packaging and shipping labels, so consumers can quickly locate their products.

What Makes the Alarm Go Off When You Shoplift?

The alarm goes off when you try to shoplift a product. Security tags are used to set off the alarm. The tags contain a coiled antenna and are made of plastic. The security tag attaches to the item and cannot be removed by the thief.

The retailer inserts the RFID tag into the garment and then deactivates the device at the cash register. In a typical theft, the theft will be noticed because the greeter will ask the thief to return and check the receipt.

Do Barcodes Set off Alarms

Typically, these tags have a magnetic strip that activates the alarm. These tags are placed near the barcode on the item. Once the item is scanned, the alarm will go off. Most people may not know this, but some individuals walk into stores carrying items with these security tags and never realize they are wearing them. These security tags are usually placed inside the garments during the manufacturing process.

Some stores also place security tags on items that set off alarms when people try to steal from them. The magnet is placed near a barcode on the item and can be deactivated by the cashier by showing the receipt.

Some shoppers will try to shoplift with these tags, but the sensors will not work when the items are stuffed in them. Thankfully, there are ways to circumvent these devices.

Final Thoughts

It should be noted that if you happen to have metal inside your body because of broken bones or surgical procedures, there is a high chance that you will set the alarm off once you pass through these anti-theft adhesive sensor doors. In some cases, pagers, mobile phones, and certain car keys with a remote locking system can set off security alarms. Check out Barcodes Set off Alarms on Amazon here

Do Barcodes Set off Alarms  work

The swipe card that gives you access to several departments at your workplace is also magnetic and can activate the security alarm. However, the magnet placed near the barcode of products can be easily demagnetized by covering it with a conductive material, such as aluminum foil. Read about the best watches for skiing here.

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