Tagiy — NFC smart business cards
The studio's own product before the Codliy rebrand: a SaaS that turns a physical NFC card into a living profile — tap to share contact, social, portfolio and payment links.
- Client
- Codliy Studio (in-house)
- Company
- Codliy
- Completed
- September 2024
- Duration
- 2 years (in-house)
About This Project
Tagiy was a full SaaS product we built and ran end-to-end: hardware procurement, card programming, customer SaaS, and a payments layer. It ran for two years before we folded its technology into the current Codliy stack.
The product
Each customer got a set of NFC cards linked to a profile they fully controlled. Tapping the card opened the profile on the recipient's phone — no app install, no login. Profiles supported contact vCards, social links, a portfolio gallery, and a "pay me" button wired to local gateways.
The interesting engineering
- Card serialization tool that signed each card to a profile — replacements rotate the signature so lost cards can be revoked.
- Per-card analytics (taps, regions, hours) surfaced in a small Vue dashboard.
- Theme system with live preview — the core of what is now Codliy's Theme Settings.
Much of what now ships as Codliy's theme engine, admin scaffolding and modular package structure was proven here first.
Key Features
- Programmable NFC card linked to a live profile
- Per-card analytics dashboard (taps, regions, hours)
- Profile themes with live preview
- Payments via Stripe + Iyzico (local + international)
- Card revocation and rotation for lost cards
Challenges
Unknown-to-us hardware vendor quirks on the NFC chips. Two payment gateways with very different webhook shapes. Every customer wanted a different theme by day two.
Solutions
Serialization tool that normalized vendor quirks behind a clean API. A gateway adapter layer — one interface, per-gateway drivers. Theme engine with CSS variables and a live preview (the same engine now powers Codliy Theme Settings).