Always Encrypted bracelets
The Obsidian bracelet is made of polished black stone beads with a gold accent and an NFC chip built in. Tap it on a reader and the door checks your Always Encrypted key, which holds no name. It needs no battery and no app at the door. It costs $175. Allow 2 to 4 weeks for delivery.
Our bracelet
The Obsidian is a passive device. It opens a door on a tap, and the key on it holds no name.
Black stone bracelet
A bracelet of polished black stone beads with a gold accent and an NFC chip built in. It reads as jewellery, because it is.
Passive key: whoever holds it can open the doors you are cleared for until you remove it.
$175Pre-order, ships from our fulfilment partner
How a door opens
The key tier decides how strict the check is. The card above says which tier each device carries.
01
We write one NFC record with your key before it ships. It holds a random handle and device number, not your name.
02
Hold it to the reader. It needs no battery and no app: the reader powers it for the moment of the tap.
03
The reader checks the signature, the expiry date and the revocation list, then opens. It logs a hashed device number and the time.
04
Open the app on your phone, signed in with the same account, for the private map, pins and routes.
Allow 2 to 4 weeks for delivery: every device is tested on our bench and loaded with your key before it ships.
Ships from our fulfilment partner.
Returns and warranty terms will be published here.
| Item | Detail |
|---|---|
| Material | Black hematite or onyx beads with a gold accent |
| Chip | NFC, built in |
| Key tier | Passive |
| Price | $175 |
| Delivery | 2 to 4 weeks |
Not at the door. A tap is enough. You write the key once from your account page or at a verification visit.
Remove it from the Devices list in your account. Readers refresh their revocation list about every 5 minutes, and the bracelet stops opening anything.
It holds a random account handle and a random device number. Your name, email and phone number are never on it.
The listing describes natural polished stone beads, black hematite or black onyx. We confirm the stone on our bench before we ship.
Allow 2 to 4 weeks. Every bracelet is tested on our bench and loaded with your key before it ships.
Request clearance