The same caveats apply to your subway card, try to read it with an NFC device. If you can then you may be able to clone the data onto the ring. But there may also not be enough space in ring storage. You'll have to try it out and see!

Hi, I've already done a small proof-of-concept interrupt device which simply disconnected the PTT if there was no ring presence in a 5 minute period. A few of these little ideas got packed away in boxes when I moved and haven't come back out again.
It does look very workable though, the trick would be getting the circuitry small enough to be unobtrusive and figuring out an easy way of field programming a new ring.

The only issue I can think of would be antenna placement. To work it so there was no manipulation of the door's hardware, then a wireless solution like xbee would be needed. Or else i could seerunning the antenna through the hole where the deadbolt cylinder runs through the door. I was trying to pair this up with MrStein's board.

Pretty cool MrStein ;)

ok, thanks! I'll try it soon

Awesome thanks @SanyaIV

RE It's probably a hash or the encrypted password,

It's probably a hashed key lookup so even if someone got the string from your ring they wouldn't be able to guess your password or brute force it without the key lookup table from your PC.

J

Pretty sure it already does.
It should be quite possible to add an nfc reader in alongside/instead of a keypad, if that's what is meant?

I think maybe the antenna matching was why I wrote it off..

Thanks for your response. It sounds like there's still a possibility, but I guess I won't get my hopes up too much. Luckily the LG G4 I'm using now works fantastically even with the old ring I still have (as far as reading distance and reliability) so I can still look forward to using it for my local phone security even if it doesn't work for my Google account.

Well, this is a lot tidier then my implementation, however I stopped using it as it was just too bulky as i never bothered to place it in a case, so wires everywhere! Kudos none the less!

e; maybe a bit more commenting in the code for people whom is newer on the coding side?
I always try to practice commenting every line if i release code.

Great start to this tutorial. Car ignition start next please! :)

antennas seem to work great !
Good video

I'm in Japan again for a while. Hopefully today I can go and source some tiny NFC reader from Akihabara and then continue working on it this weekend (its a long weekend in Japan). I'll definitely post a video when i've made some more progress. I'll also update the github. But now that I've got this idea, I'm going to move the credential provider part of the service as a main part, rather than as a plugin so that it makes more sense to use this so suspend plugin processing (so that swiping a ring with an RDP credential prompt up doesnt lock your local machine instead of passing the login). Otherwise i'd have to make a more complex rules engine for processing plugins

i.e. you'd "activate" a plugin to run "only when the machine is logged in" and set the order that they ran and also make one be able to stop processing all of the others. and this might have to be registered on a "per ring" basis.
so
check ring
-> get list of plugins
-> get machine state (locked, unlocked, awaiting credential)
-> run plugins in order
-> check plugin result, and stop processing plugins if required

Its all doable. I'll work on it and post an update when i've made a decision for how I want to do things.

I'm cross-posting with https://forum.nfcring.com/topic/683/nfc-reader-writer-for-windows/20 as this thread is about the same topic.

I'm Maxime from ISLOG and we just put John's advices in practice (he tried our RFID Logon solution months ago and wasn't completely pleased with it previous state).
ISLOG Logon is now available freely for personal use under ISLOG Logon NFC Community package.

You can download it here :
64-bit: http://download.islog.com/islog/4.0/NG/ISLOG Logon NFC Community-4.7.0708-x64.exe
32-bit: http://download.islog.com/islog/4.0/NG/ISLOG Logon NFC Community-4.7.0708-x86.exe

This is a first version for feedback, please be gentle :). No data encryption for now but it will come.

It unfortunately cannot be open-sourced because we have to re-architecture a lot the current codebase to do so (some modules are shared with our commercial product) which is too much investment for our small team right now. So except there is something like thousands of requests we will not do it, sorry. Small comfort, part of it is already open source like the RFID / NFC middleware https://github.com/islog/liblogicalaccess

EDIT: see https://forum.nfcring.com/topic/782/islog-logon-windows-nfc-login

By SSSS I assume you mean Shamir's Secret Sharing Scheme?

No I was not on any conference calls and I do not work for microsoft directly. I am just a windows developer with friends/contacts there. I typically try to bridge the gap when I find interesting technology that does not have full Windows App support and NFC ring is my new toy.

I was a little quick to post this question. After reading a little more it seems like it will be pretty simple to create a UWP App utilizing the new Companion Device API to unlock windows 10 devices. Potentially just utilizing the UID of the ring. However the Companion Device API is not a completely public API meaning you need to email microsoft and get registered to get approval to utilize it. I briefly read some posts and the kickstarter page that currently exists for creating something similar but I am not really aware of what technology is being used to do it. If there are no plans for you guys to try this any time soon then I was going to attempt to get registered for creating a generic UWP NFC app that lets you unlock windows utilizing the UID of any NFC device (which of course includes the ring). This is still all in the pre-release phase but microsoft is going to release it publicly with the Anniversary Update which i believe is happening sometime in early August.

Any news about cloning the Navigo?
It's a great idea to use the ring instead of the card.