MIFARE Ultralight EV1​ is a cost-effective, entry-level contactless IC​ from NXP Semiconductors, designed for limited-use, disposable, or low-security applications. It is fully compliant with ISO/IEC 14443 Type A​ (NFC Forum Type 2 Tag).

Key Features

Security Features

While simple, the EV1 adds improved security over the original Ultralight:

1. 32-bit One-Time Programmable (OTP) Area​
• For write-once data (e.g., marking the ticket as "used").
2. Write Protection​
• Lock bits can permanently protect memory pages from further writes.
3. 3-Pass Authentication (optional)​
• Supports a 16-bit password protection​ scheme (activated via configuration) to restrict read/write access.
4. Anti-Tearing Mechanism​
• Helps maintain data integrity if the card is removed during a write.

Memory Layout (Simplified)

Typical Applications

Due to its low cost and NFC compatibility, it is widely used in:

• Disposable Transit Tickets​ (single-use or few-use tickets)
• Event & Festival Access Wristbands
• Product Authentication / NFC Tags
• Loyalty Cards & Coupons
• Hotel Keycards​ (limited-stay)
• NFC Forum Type 2 Tag​ applications (e.g., smartphone interaction)

Comparison with MIFARE Ultralight C

The Ultralight C​ adds 3DES authentication​ for higher security, while the EV1​ is optimized for lowest cost and basic protection.

Why Choose Ultralight EV1?

• Extremely Low Cost​ – ideal for high-volume disposable items.
• NFC Compatible​ – works with any standard NFC phone or reader.
• Simple Integration​ – minimal security configuration required.
• Reliable​ – proven in mass transit and event access worldwide.