Open-source passive NFC tag that signs with ECDSA, verified on-chain
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HN · launched Sep 15, 2026 · 9 upvotes (top 46%) · 0 views
Niche: open-source hardware and maker electronics · 180 launches, 3 in the last 7 days ▼ -73% · Explore this niche →
Category and tags
- Security
- Hardware & robotics
- Developer
- Not AI
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 180 launches in open-source hardware and maker electronics →
Could you build this?
No This project involves custom hardware engineering of an energy-harvesting passive NFC PCB capable of asymmetric cryptography and matching on-chain smart contracts.
What it would actually take: The stack requires a custom passive NFC circuit using an energy-harvesting secure element or low-power microcontroller (such as an NXP or ST micro running an ECDSA secp256k1 or ed25519 routine purely off RF field power) paired with an EVM smart contract that validates the cryptographic signature. The hard parts are RF antenna impedance matching, power budgeting for asymmetric crypto on passive harvested energy, and secure hardware key storage. It demands deep hardware/EE design and embedded cryptography expertise.
Discussion
No comments on this launch.
Competitors
Other products that read as similar to this one : 240 launches clear the similarity bar, closest 8 shown.
Attention rank: #97 of 241 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 304 days after the earliest competitor.
- NFC tags are good material for pranks on Android · hn · 2026-05-06 · 18 upvotes · similarity 0.62
- Emula · github · 2026-10-20 · 15 upvotes · similarity 0.59
- flipper-mtools · github · 2026-10-06 · 15 upvotes · similarity 0.58
- NFC Energy-Harvesting PCB Business Card with an MCU · hn · 2026-08-28 · 231 upvotes · similarity 0.57
- Open security key on nrf52480 with NFC · hn · 2026-04-20 · 5 upvotes · similarity 0.52
- NFC Studio · ph · 2026-09-16 · 1 upvotes · similarity 0.50
- huawei-nfc-eink-android-app · github · 2026-10-17 · 27 upvotes · similarity 0.50
- Nectcard · ph · 2026-10-24 · 1 upvotes · similarity 0.47
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