Memberships: a card that proves it is current.
Membership cards are easy to copy and hard to check. Watermelon Auth makes the card itself the credential, and every tap checks whether the membership is actually still good.
Status on every tap
A tap verifies the cryptographic response and checks the membership state. Active, expired, suspended, revoked. The verifier says which.
Clubs and associations
Issue cards to members, volunteers, and staff. The card carries the credential; the platform carries the context.
Event credentials
Conference passes and event badges verify in real time. No clipboard, no laminated badge anyone could photocopy.
Anti-forgery by default
A photograph or a copied link cannot produce the fresh response a real tap does. The pass is the pass.
Volunteer credentials
Temporary credentials with clean expiration. A season, a weekend, a single event.
Check-in without hardware
A phone at the door verifies the tap and shows the branded result. No reader to install, no software to train people on.