3SI Security Systems is a manufacturer and marketer of electronic security systems for cash protection. The company provides security solutions utilizing electronic activation of dye-based staining, smoke and tear gas to protect currency from bank robbers. 3SI’s solutions include currency degradation and GPS tracking solutions to protect cash and high-value assets in banks, safes and ATMs, jewelry, pharmaceuticals, consumer electronics, other retailers and law enforcement. 3SI's headquarters is in Malvern, Pennsylvania.
