Protech-T AB · Stockholm
Security applications for the phone you already carry.
Protech-T AB is a Swedish technology company developing security applications for mobile devices. We design for the real world, where a phone can be lost, seized or searched, and we engineer every product so that your data stays yours: encrypted on the device, independent of accounts and cloud services, and beyond the reach of anyone else, including us.
What we build
One product today, built like it has to survive a bad day.
The phone within your phone.
A private, encrypted environment inside your iPhone with its own home screen and apps: photos, files, notes, passwords, contacts, calendar, end-to-end encrypted chat and calls.
- Two codes. One opens the vault. The other wipes it and shows a fresh install.
- No identity to seize. No account, no phone number, no email. A random share code and keys that live only on the phone.
- Post-quantum messaging over Tor. The relay sees ciphertext addressed to random ids, never who is talking.
How we build
Four rules we do not negotiate.
They cost us features. They are also the reason the products are worth trusting.
Everything on the device
Encryption keys are derived from your code and sealed by the phone's Secure Enclave. We never hold a key, a backup or a copy.
No accounts
Nothing to register, nothing to reset, nothing to subpoena. Identity is a random code and a key pair that exist only on your phone.
An open cryptographic core
Our cryptography is a single, memory-safe Rust library with a pinned public interface, fuzzed and tested against published vectors.
Built for audit
The core is frozen at version 1.0 for independent external review before launch. Findings get fixed and re-verified, not explained away.
Launching 2026
Be first to know when Diga ships.
One email on launch day. Nothing else, ever.
Used for one email on launch day. Never shared.