App Features

Solidarity has four main sections, each designed for a specific purpose. Here’s what each one does.

📇 Cards

Your digital business cards

Create and manage your business cards with different information for different contexts.

What you can do:

Create multiple cards (work, personal, event-specific)
Add contact info, social links, skills
Choose what to share each time
Save to Apple Wallet

Privacy levels:

Public - Name and basic info only
Professional - Work details included
Personal - Full contact information

⚡ Match

Share with people nearby

Connect face-to-face with others using Solidarity without internet.

How it works:

Both people open the app
Nearby devices appear automatically
Tap to connect and share
Choose your privacy level

Also supports:

QR code scanning
Manual card entry
Share links for remote contacts

🎯 Shoutout

Discover other users

Browse business cards shared publicly by other Solidarity users.

What you’ll find:

Public profiles from the community
Cards organized by categories
Search and filter options
Lightning-themed discovery feed

Note: Only users who choose to share publicly appear here. Your cards stay private unless you opt in.

🔐 ID

Identity and group management

Manage your cryptographic identity and group memberships for anonymous verification.

Four group types:

1. Personal Groups (Local)

Groups you create and manage on your device.

Add members manually (by commitment)
Full control over membership
Great for: small teams, events, meetups

2. Invited Groups (P2P)

Groups you join via direct invitation.

Receive invite from group owner
Join with your cryptographic commitment
Great for: private communities, friend circles

3. On-Chain Groups (Blockchain)

Groups synced with Ethereum smart contracts.

Verifiable membership on blockchain
Decentralized and tamper-proof
Great for: DAOs, token-gated communities

4. ENS Groups (Domain-based)

Groups registered via Ethereum Name Service.

Join by ENS domain (e.g., mygroup.eth)
Automatic membership verification
Great for: public organizations, open communities

Why use groups?

Prove you’re part of a group without revealing your identity
Share credentials anonymously
Verify membership with zero-knowledge proofs

Quick actions:

Tap ID tab icon → Generate proof (copies to clipboard)
Use proof to verify group membership
No personal info revealed

Quick Tips

Switching between features:

Use the bottom tab bar
Cards, Match, Shoutout, ID

Privacy-first:

All data stored on your device
Choose what to share each time
No tracking or analytics

Offline-capable:

Match works without internet
QR codes work anywhere
Local-first design

Next: Learn about specific sharing methods or check out common use cases.