Darn. I've been looking for a reliable and secure way to accomplish this for a couple years now. My idea was to use an RFduino board to automatically detect my Apple Watch when it was in range, and use my watch's MAC address or a secure handshake to validate it as the key. There was a popular tutorial posted a while ago that detailed how to open a door with an Apple Watch (https://makezine.com/projects/apple-watch-door-unlocker/), but that implementation required you to launch an app on the watch and tap a button — not the proximity unlock I had envisioned. After experimenting with an RFduino for a couple weeks without progress, I shelved the project. I'd really love to see someone do this, it just seems that every board out there is one stop short of being able to provide the desired functionality...at least in conjunction with an Apple product
I considered making another attempt at the project recently after Apple announced it was finally (FINALLY) opening up some of the NFC functionality of the Apple Watch and iPhone to developers, but it seems they've locked it down so much that it is still hopelessly useless for something like this.
joshmdy:
Darn. I've been looking for a reliable and secure way to accomplish this for a couple years now. My idea was to use an RFduino board to automatically detect my Apple Watch when it was in range, and use my watch's MAC address or a secure handshake to validate it as the key. There was a popular tutorial posted a while ago that detailed how to open a door with an Apple Watch (https://makezine.com/projects/apple-watch-door-unlocker/), but that implementation required you to launch an app on the watch and tap a button — not the proximity unlock I had envisioned. After experimenting with an RFduino for a couple weeks without progress, I shelved the project. I'd really love to see someone do this, it just seems that every board out there is one stop short of being able to provide the desired functionality...at least in conjunction with an Apple product
I considered making another attempt at the project recently after Apple announced it was finally (FINALLY) opening up some of the NFC functionality of the Apple Watch and iPhone to developers, but it seems they've locked it down so much that it is still hopelessly useless for something like this.
My first attempt to do it was using bluetooth on my phone and my family phones but the scan for Bluetooths was taking long and for multiple phones even longer.. Also the current drain was big on my car and on my phone too.
Then i searched for active nfc or long range nfc but there are only industrial readers with a long range
Then i realised that RF is the best solution but the hardest because you have to build it yourself and you can't use smd components on a smd board and also there are many chips that are not avaiable here or too too expensive or you have to buy lot and lots of them like 1000+pcs.
Building it means it will be very inefficient in any point of view.
This is all about passive: the user don't even have to think about opening the door.
On the other side where the user have to do something there are many solutions.
Like building an app for android or ios and press a button or even create a shortcut(android).
Or use a nfc module china(behind a window/plastic) and unlock it or lock it by a tag(not another nfc) attached to the key...
Or many more.
