A Secure Element (SE) is a tamper-resistant platform (typically a one chip secure microcontroller with a microprocessor) capable of securely hosting applications and their confidential and cryptographic data (e.g. key management) in accordance with the rules and security requirements set forth by a set of well-identified trusted authorities. There are three different form factors of SE: Universal Integrated Circuit Card (UICC), embedded SE and microSD. Both the UICC and microSD are removable. Each form factor links to a different business implementation and satisfies a different market need.

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