TAP. AUTHENTICATE. SIGN.
The WATS NFC Metal Card is an optional physical NFC card that authenticates access to your non-custodial WATS Wallet and confirms signatures with a tap in the WATS mobile app. It holds no keys and is not cold storage: your keys stay in the WATS apps and the card is a companion device. Cards are sold at store.watswallet.com from $54.90.
What is the WATS NFC Metal Card?
The WATS NFC Metal Card is a military-grade physical card you tap to an NFC-enabled phone to authenticate access to your non-custodial WATS Wallet and tap-to-sign transactions. It is a companion device for access — not a payment card and not key storage. It embeds an NTAG 216 chip, is IP68 waterproof and MIL-STD-810 durable.
Specifications
- Material
- Brushed stainless steel (~22 g) or polycarbonate (~5 g)
- Water resistance
- IP68 — submersible to 1.5 m for 30 minutes
- Durability
- MIL-STD-810, -40°C to +85°C, EMI shielded
- NFC chip
- Embedded NTAG 216, NFC Forum Type 2
- Frequency
- 13.56 MHz
- Security
- Unique chip ID, paired to one phone
- Standard
- ISO/IEC 14443 compliant
- Dimensions
- CR-80 — 85.6 × 53.98 × 0.84 mm
- Custom print
- Optional UV print, 600 DPI, CMYK
- Price
- From $54.90 at store.watswallet.com; the store lists the current sets and materials
- Memory
- 888 bytes user memory (NTAG 216)
How it works
- 1
Tap to authenticate
Hold the card to an NFC-enabled smartphone to verify your identity and unlock access to your WATS Wallet accounts. The NTAG 216 chip carries a unique card ID and works only with the phone it is paired to.
- 2
NFC tap-to-sign
Pair the card with the WATS mobile app to confirm signatures with a physical tap, adding a physical confirmation step on top of biometric unlock. The card itself holds no keys.
- 3
Order and personalize
Buy the card at store.watswallet.com, choose brushed stainless steel or polycarbonate, and add an optional UV custom print of your logo, artwork, or photo.
Is the NFC Metal Card right for you?
- Choose it if
- You use the WATS mobile app and want a physical tap-to-authenticate step
- Look elsewhere if
- You need offline cold storage of private keys (the card holds no keys)
- Works with
- Only the one phone it is paired to, in the WATS mobile app
- Optional
- The extension and the app work fully without it
Frequently asked questions
What is the WATS NFC Metal Card?
It is a military-grade physical NFC card that authenticates access to your non-custodial WATS Wallet and enables NFC tap-to-sign with the WATS mobile app. It carries an embedded NTAG 216 chip (an NFC Forum Type 2 tag) and complies with ISO/IEC 14443.
Does the WATS NFC Card store my crypto or private keys?
No. The card authenticates access and enables tap-to-sign; it is not key storage and not a standalone cold wallet. Your keys stay in the non-custodial WATS apps, so you alone control your funds.
How durable and waterproof is the card?
It is rated IP68 (submersible to 1.5 m for 30 minutes) and built to MIL-STD-810 durability standards, operating from -40°C to +85°C with EMI/radiation shielding. Stainless steel weighs about 22 g; polycarbonate about 5 g.
How much does the WATS NFC Card cost and can I customize it?
Cards are sold at store.watswallet.com from $54.90, and the store lists the current sets and materials. You can add an optional UV custom print (600 DPI, CMYK) of your own logo, artwork, or photo when you order.
Last updated: October 7, 2026