Booster bag

A booster bag is a handmade bag used to shoplift, typically from retail stores, libraries, and any other location employing electronic security detectors to deter theft.

[1] The booster bag can be an ordinary shopping bag, backpack, pocketed garment, or other inconspicuous container whose inside is lined with a special conductive material, typically multiple layers of aluminium foil.

[2] An item is placed inside the booster bag (effectively a Faraday cage).

Once a bag has been successfully tested,[4] a shoplifter can steal dozens of items with very little effort.

[5] However, as electronic article systems improve, shoplifters are turning to high efficiency tag removal devices.