While your idea is creative, it introduces some potential downsides that could conflict with bitcoin's principles and practicality.

1. Linking bitcoin keys to personal network identifiers like sims or mac address could expose users to tracking or hacking. This goes against bitcoin'ss core value of anonymity.

2. Network identifiers can be spoofed, stolen or hacked. If someone gains control over trusted person's identifier, they might compromise the key recovery process

3. Sim cards, mac addresses and other identifiers can change due to upgrades, switching providers or technical issues. Managing these changes securely without risking access loss could add complexity

4. Incorporating network-layer identifiers might introduce reliance on internet or telecom providers which could conflict with bitcoin's decentralized ethos