Infinitum Arc

Signature Computer Service

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About this app

Infinitum Arc represents a comprehensive reimagining of the digital card-sharing, architecture, and contact management system.

Digital Business Cards (.mpdc)
Proprietary format — Infinitum Arc introduces its own multimedia digital card file format. Cards are self-contained, offline-renderable documents. The format is compatible with the parent D.C. Infinitum web application with no conversion layer required.
Card Versions — Each contact can have up to 10 named card versions. Each version is independently shareable. The default version is flagged explicitly.
Field Selection per Version — When creating a card version, a field selector lets you choose exactly which contact fields appear on that card. An "All / None" toggle is included for speed.
Card Naming — Each card version can be given a custom file name at creation time.
Card Repository — All received and saved .mpdc cards are organized in a dedicated Card Repository screen, accessible from the contacts header.
Card Categories — Cards in the repository can be assigned to color-coded categories.

Gallery Carousel
Each contact can have a personal gallery of up to 20 images stored locally. Up to 10 images (configurable) are embedded into the digital card.
Carousel position is configurable: above or below the main card content.
An optional carousel label can be set per contact.

Peer-to-Peer Sync
Infinitum Arc's contact subscription system is a fully decentralized, relay-based WebSocket network with no central server.
Profile updates are applied immediately when received.

Proximity Mass Contact Exchange (Radar)
The Radar screen enables direct device-to-device contact exchange over Bluetooth and WiFi using Nearby Connections (P2P_CLUSTER strategy).
Every device simultaneously advertises and discovers, forming a self-healing mesh. No pairing or server is required.

Contact Groups
Contacts can belong to one or more named, color-coded groups simultaneously.

Favorites
Any contact can be pinned to the Favorites section that appears at the top of the contacts list, above the alphabetical sections.
Favorites are toggled via a star button in the contact detail App Bar or a long-press on the contact tile.

Stay-in-Touch Reminders & Special Days
Each contact supports multiple named special days (birthdays, anniversaries, etc.) with configurable lead-time reminders (days before the event).

Backup & Restore
Full backup exports all contact information and restores the snapshot perfectly.
INSERT OR REPLACE - conflict resolution preserves original contact and group IDs, preventing duplicates on repeated restores.

QR Code Sharing
Every contact and card version has a QR code sheet accessible from the detail screen and the card viewer.

Native Address Book Bridge
Contacts can be imported from the device's native address book (one-way pull) or exported to it (one-way push).
Duplicate detection on import uses multi-field scoring: phone (0.50 weight), email (0.45), and name similarity (0.25), with a 0.75 threshold.

15 Color Themes
Infinitum Arc ships with 15 switchable color themes, each with a paired dark and light variant (30 total combinations).
The default theme is Cosmic Purple dark.

🔒 Privacy
No central server.
All contact data is stored locally on-device.
P2P sync data is encrypted and pseudonymous.
.mpdc files contain only the fields explicitly selected by the card creator. Sensitive fields can be excluded from any card version.

What’s new

Performance optimizations were made.

Digital card elements such as colors, font types, and font colors can be changed during and after a card is created and saved.