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Maybe I am clueless but why not just stick a NFC chip on the back of your smartphone or just get one with NFC? I can't imagine any situation where you need an

Maybe I am clueless but why not just stick a NFC chip on the back of your smartphone or just get one with NFC? I can't imagine any situation where you need an NFC chip and don't carry along your smartphone. Ok, there's one: You are swimming in a swimming pool and need to open the locker afterwards.

edejong 9y ago
Use a four-digit pin that's by the users choosing. Works like a charm, totally water-proof and cannot otherwise inadvertently be retrieved. Also keeps brain-dead people out of the pool.
amingilani 9y ago
I was going to get an NFC ring initially. But then I woke up one night and decided that if I ever own a gun, and need it in the middle of the night because a zombie broke into my house. I'd want a system where I can stick my hand under the bed and pull out a gun. But this system shouldn't work for anyone else. That pushed me over the edge and I got an implant a few weeks later. True story. I still have to get around to buying a gun, let alone create an NFC reading smart holster.
- ethbro 9y ago
  There might be easier ways to differentiate individual hands if necrotic flesh is your threat model. :)
- paulcole 9y ago
  >I still have to get around to buying a gun Please don't.
EpicEng 9y ago
>Maybe I am clueless but why not just stick a NFC chip on the back of your smartphone or just get one with NFC? Because then you don't feel as cool when you tell people about it.