Patented Island Technology · Available to license
Elsi’s patented Island Technology keeps your backend physically air-gapped. A small “island” with a single drawbridge sits in between, connected to only one side at a time, and messages cross only on user intent.
The island only operates on user intent, such as a button press or a tap.
An air-gapped communication “island” built into the device, which the user physically controls. It passes messages between the outside world and a protected backend without ever joining the two.
The island only connects to the outside world OR to the backend. Never to both at once.
The backend is physically air-gapped. The island is the only way in, and nothing gets around it.
Messages cross only on the user’s intent, and the island switches itself off without it.
One way in, and the user controls it.
The outside world only ever talks to the island. Nothing gets around it to the backend, where keys and credentials live.
Nothing crosses the bridge without the user’s intent, such as a button press or a tap.
Sensitive data can stay on the device instead of on a server or in the cloud.
The patented design lets the antenna harvest energy to power the device.
Two products from Elsi’s own portfolio show how the island works in practice.
An offline password manager. Pick an account in the app, press the button on the Stash Card and tap it to your phone. The island collects the requested password, and only that password, from the card’s vault and hands it to the phone.
“There is never a direct connection to your vault of passwords.”
Island Technology applied to approving crypto transactions. A small approval device with a screen and no battery or cables. Request. Screen. Approve. You only approve what you see on your Crypkey.
A 78-second Stash Password Manager explainer: the island picks up the request from the phone, disconnects, connects to the vault, retrieves the requested password, then reconnects to the phone and passes it along.
“Keeps your passwords offline, and in your hands. Literally.”
“The Stash Password Manager card is one of the best things to hit the security world in decades.”
“I can hack into Trezor and Ledger wallets and steal everything, but I cannot hack into the StashPass. It’s a brick.”
Keys, credentials and sensitive records kept behind the island.
Nearly everything is connected now, so controlling access matters. AI makes that harder.
Crypto transactions approved only on user intent.
Device secrets kept off the network side.
One way in, with a tap the user controls.
A built-in island button, so approvals reach the air-gapped backend only on user intent.
U.S. patents: US 11,062,050 · US 11,861,028 · US 12,437,108, “Devices, systems, and methods for securely storing and managing sensitive information.” Assignee: Elsi Inc. Also patented in Canada (CA 3,082,120) and the United Kingdom (GB 2583250, also covering Hong Kong).
In today's world, everything is connected. As AI increases the risk of hacks and security breaches, Island Technology protects your data and gives you complete control over what to share and when. Let’s talk about where it fits your roadmap.
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