Diode, Inc.

Create a contact card once, write it to NFC, and share a polished experience - no account required.

Turn a blank NFC tag into a digital contact card.

Diode lets you create a digital business card with a name, company, phone number, email, and website. Preview the card, write it to a compatible NFC tag, and verify it from your iPhone.

When someone taps the finished card, iPhone presents a fast App Clip contact experience without requiring the full app.

The tag also carries a standard vCard record.

From the card experience, people can save the contact, call, email, visit the website, or share the link. A writable card can also be updated directly from the App Clip.

No account, subscription, ads, or tracking. Your card details stay on your device until you choose to write them to an NFC tag.