Alpha GPS vs Veridenz

Geotag photos automatically while you shoot. Alpha GPS sends your iPhone’s current location to compatible cameras over Bluetooth. Pair your camera once, switch it on, and the app reconnects automatically - keeping GPS data up to date in the background. KEY FEATURES • Automatic GPS location syncing • Reliable background operation and reconnection • Support for multiple cameras at the same time • Remote shutter control on supported models • Camera clock and time-zone synchronization • Guided setup and practical troubleshooting • No account, advertising, or paywall • Free and open source COMPATIBILITY Designed for cameras that support Bluetooth location linking, including compatible Sony Alpha, ILCE and ZV models. Confirmed reports include the A6400, A6700, A7 V and ZV-E10. HOW IT WORKS 1. Enable Bluetooth location linking on your camera. 2. Pair the camera with Alpha GPS. 3. Keep shooting while location data is transferred automatically. PRIVACY Your location is used only to send coordinates to connected cameras. Alpha GPS does not create or sell a location history. Optional diagnostic reporting can be disabled at any time. Alpha GPS is an independent open-source app and is not affiliated with or endorsed by any camera manufacturer.

Capture important photos privately and create cryptographic proof that can be verified later. Veridenz is free to download, and verification is free for everyone. Anyone can use Veridenz to check whether a photo matches its witness, whether the cryptographic signature is valid, and whether the witness record exists on Nostr. Creating new captures, generating signed witnesses, and publishing witness records requires the Veridenz Lifetime Unlock, available as a one-time in-app purchase. There is no subscription. Veridenz keeps captured photos privately inside the app rather than automatically adding them to your Apple Photos library. Optional iCloud Sync can securely synchronize your Veridenz photos and witnesses across your Apple devices while keeping them separate from Apple Photos. Veridenz can be useful for documenting: • Property damage • Deliveries • Repairs • Inspections • Receipts • Documents • Work records • Items being bought or sold • Other important evidence and documentation Each capture creates a cryptographically signed witness tied to the exact original image file. The witness record can then be published to the decentralized Nostr network. The original photo itself is not published to Nostr. Verification can confirm that: • The selected image matches the originally witnessed file • The cryptographic signature is valid • The witness record exists on Nostr Your photos remain managed privately by Veridenz. If you enable iCloud Sync, they can also synchronize through Veridenz’s private iCloud storage to your other Apple devices. You can explicitly export or share files when you choose. Veridenz does not require an account or subscription. A signing identity is created and managed by the app and protected using Apple Keychain. For additional privacy, you can optionally protect your saved Witnesses library with Face ID, Touch ID, or your device passcode without adding authentication to the camera or capture process. IMPORTANT LIMITATIONS Veridenz can demonstrate that a specific file matches a cryptographically signed witness created at a particular time and can verify the associated Nostr record when available. Veridenz cannot prove that the scene shown in a photograph was real or unstaged, establish that everything depicted is truthful, or guarantee that a photo or witness will be accepted as evidence by a court, insurer, employer, marketplace, or other organization.