Police officers are testing a Batman-like device that binds a suspect without using force - here's how it works

The device fires off a Kevlar tether.

At the end of the tether are two small barbs that attach to a person when they make contact.

The cord binds a person's arms to their torso.

Or, it binds their legs together, restricting their movement.

The LAPD intends to start testing the device during a trial period in January.