content: Yes, some old wireless keyboards used 8-bit encryption. That would be like me attaching a bunch of bred ties together, tying one around the door knob, then anchoring the other end to something else and calling it a "door lock". 8-bit encryption would be extremely weak, but it means they can put "encryption" on the package. BTW even more modern wireless keyboards aren't safe, because they don't use things like rolling codes. The key never changes, so once its cracked, its cracked.