The work of the supermarket door alarm
Brother ... Supermarket cashier that is in the scanner sweep bar code. Not demagnetization. Supermarket anti-theft points. Soft stickers and hard stickers. General food and daily use of soft stickers. (Magnetic) but the supermarket is rarely used. Because the cost is too high. Generally used. Will be the first product demagnetization. Usually by the cashier next to the staff to help. And some clothing a relatively large number of goods with hard stickers. This is obvious. Use violence to remove the logo. ^ _ ^ As long as you have gall bladder As for the principle. can only say. Is the use of magnetic principles. You can not eliminate the general magnet. But the machine is not omnipotent. When the alarm is over. Nor is it 100% alarm. and. You have a soft label of the goods cited alarm detection range. Such as higher than the alarm. The The same will not be called.
How could you think of such a question? Do you think of the supermarket to steal it? If so, I advise you not to have this idea. Because some people go to the supermarket to steal things may be once, the second has not been arrested, but more, there will always be caught once. It was too shame at that time. Also bear legal responsibility.
Supermarkets are the use of the magnetic principle, but most of the supermarket only to do high-value goods such as cosmetics, shampoo, chewing gum, film, batteries, clothes, bags, toys, etc., in general, food will not increase Magnetic stripe, most of the supermarket operating margins are 10%, about 5% of food, the installation of magnetic stripe, then the cost is great.
