I’ve never heard it discussed at the hardware level, but maybe I’m just out of the loop? I’ve only ever heard it discussed in regards to implementation on the main chain. Coding this for a hardware wallet shouldn’t be difficult so I’m confused why this isn’t standard. Time references can be block height.
Discussion
I think overtime time locks will be more common.
It probably makes more sense to implement at the wallet level not hardware signer level.
Not sure what the difference is / what you mean. My premise is do it at the interface. Never touches the chain. The wallet restricts access to sending UTXOs for a certain number of blocks. Basically the ability to lock yourself out of sending on a specific device. It’s super easy to code.