Anti-shoplifting+Device

=Anti-shoplifting Device= Messrigtoc



Purpose
//The purpose of this device is to prevent people from stealing from stores by using sensors to detect whether or not an item has been paid for.//

Energy
//Radio Frequency signals are sent back and forth.//

Controls
//Disposable tags, often found on clothes, are used with radio frequency (RF) systems. The tags have a thin piece of aluminum attached to an antenna on the back that sends out a radio signal. If the posts at the exit of the store find a signal that matches one that they have been programmed to look for, an alarm will go off.//

Materials
//Aluminum is the main material on tags used with RF systems. Plastic is the most common material that you can see on all tags.//

Science
//This device uses electromagnetism. Electromagnetism//

Design
//An anti-theft device can look like a number of different things, or it can be hidden so you can't see it at all. The most common design is two posts at the entry/exit gate at the front of the store. Along with this device, there will be a piece of aluminum on the back of your tag. As mentioned before, the disposable tags on clothes and other items can have sensors in them that would set off an alarm if you try to walk out of the store without having them deactivated. Reusable tags are the plastic tags attached to most clothes. A benefit denial tag is a tag filled with special inks that will ruin clothes if it is not properly removed by a store clerk.//

Evolution
//Many new methods for preventing shoplifting have been made. Surveillance cameras are often used in large department stores. Also, many different types of sensors are used. The design has become more hidden over time in order to catch people off guard.//

Competitors
//Surveillance cameras can be used instead of RF systems.//

[[image:techno_mystery_tour-_symbolw3.jpg width="116" height="67" align="right" caption="Next Stop: Bose Home Theater System" link="Bose Home Theater System"]]
//Surveillance cameras can also be used to help managers of stores to get an overview of what is going on in a store.//

Sibling
GPS Receiver