Term for an anti-theft/anti-loss feature seen on pens

I suspect many people here have seen those pens in banks by the tellers, that have lines between them and the counter top, so users can't walk off with them. I am trying to find out what that kind of option is called generally, so that I can try and extend its use to other things intelligently.

UPDATE:

I am looking for the industry standard term for these things so I can search for a similarly accoutered pocket lighter. I have a cousin who is becoming senile and do not want him to lose his lighter, or have someone steal it.

Solution 1:

A tethered pen would likely work.

tether TFD

A rope, chain, cable, or other line for restraining or securing an object

Solution 2:

Not all bank pens use this specific type of cord, but a lot do:

Office Depot sells the above pen under the name "chain pen", however the chain itself is often called either a "bead chain" (after the manufacturer?) or a "ball chain" (after a different manufacturer?) or a "ball bead chain" (splitting the difference?).

Any one of these expressions brings up different sites selling, for example, chains for dog tag necklaces, which you could attach to a lighter with a keychain.

It's also relevant to note that bead chain is in Merriam Webster:

a chain formed of small hollow metal spheres connected by short dumbbell-shaped metal links that is used especially in electric pull sockets and switches