Quote - The Jock Strap on the extreme left is very impracticle for a slave!  Its horns will constantly be getting in the way of any task to be performed. go with electronic collars, bracelets and anklets as a form of future digital leg irons and manacles.

dph

 

Maybe his only function is to be a living statue? I actually like it, it's artsy. ^^ Any viewer will wonder what that slaves use is.

But...

Mostdigitalcreations has a future prisoner with laser-beam-handcuffs in their freestuff and also an easyposing rope in their shop. You can probably also go well with tiny "implants" of any shape on head, neck or body, as tiny chips will probably be enough in the future to restrict peoples actions...