Prototype Build
A working unit on your bench, source included.
3–6 weeksExplore
Offline arrival logger
A self-contained check-in station for conferences. It records who arrived, when, and at which entrance, with no internet connection at all.
- Area
- Built with
- Raspberry PiNFCMagnetic stripeLocal web UI
- Related services
- Prototype Build · Device Security Review
Benefits
What it delivers
01
Nothing to hack remotely
The wireless chip is physically removed, so there is no network to attack.
02
Fast check-in
Tap an NFC badge or swipe a magnetic card at the door.
03
Clear records
Who arrived, when, and at which entrance.
How it works
From input to result
The path data takes through the system. The highlighted step is where the main work happens.
- 01Badge
- 02NFC / mag-stripe reader
- 03Raspberry Pi
- 04Local web UI
- 05Arrival log
What I built
- Raspberry Pi with the Wi-Fi and Bluetooth chip physically removed
- NFC and magnetic-stripe readers, plus an on-device screen
- Auto-booting local web interface for staff at the door
- Next version: a short-lived capture layer that keeps no data, feeding storage over a one-way link, from fully air-gapped up to cloud-connected.
Tech stack
Raspberry PiNFCMagnetic stripeLocal web UI
Services
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Device Security Review
Find the weak points before someone else does.
1–3 weeksExplore
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