Card security and limits
Freeze it instantly, use single-use numbers online, and cap what it can spend. The controls that keep a crypto card safe.
Security controls
Standard controls for a good crypto card include:
- Instant freeze / unfreeze from the app.
- Disposable or single-use virtual cards for online purchases, which isolate your real card number.
- Strong authentication — biometrics, two-factor authentication, and 3D Secure verification for online purchases.
- Granular controls by transaction type — enabling or disabling online purchases, withdrawals, contactless, and international use.
- Real-time notifications on every spend, to catch fraud early.
For a physical card, there's also PIN protection and the ability to block it immediately if it's lost.
Limits
There are usually configurable, issuance-defined caps:
- Per-transaction, daily, and monthly limits.
- Specific ATM withdrawal limits.
These typically vary with your verification level (the more complete your onboarding, the higher the caps), with the card type (virtual or physical), and with your region. You can generally lower limits in the app as an extra security layer.
Exact limit values and KYC requirements should be confirmed, as they depend on jurisdiction and the card issuer.
Why it matters. A card is the most exposed surface of your wallet — it travels with you, works at any terminal, and can be used online without your device. The controls that feel like fine print are the difference between "I froze it from my phone in ten seconds" and a drained balance. Setting limits low and freezing fast is cheap insurance.