If characters want to tamper with the implant on their wrist, they may, but they will not be able to make any purchases if they remove it or break it. This is the main purpose of the wrist implant is for financial transactions. Everyone on this world and timeline uses the wrist implant to buy things.

Tampering with the implants on the brain could result in brain damage that can sometimes be permanent.

As far as LILITH goes, they won’t seem to mind. If you wanna basically lose your wallet that’s on you, kiddo.