nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqdzv5n3kypy77e83p7hxk4dvn6d4dwd9yqsw924rgplx3z0pkqupq5u90wk nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpq5nwfhpvr80ae6uealglvm3u2ya5efnfx6qwvqt29dtfcprc8sa2q95hql4 They were a vaguely more practical concept when it was possible to physically remove the batteries and ubiquitous surveillance of sale endpoints wasn't basically a given.