eSIM Workaround

eSIM implementation:

• Embedded Systems Development
• (Optional) SIM Toolkit (STK): If including traditional SIM technology, utilizing SIM Toolkit for managing SIM applications and interactions is required.

DID Implementation

• DID implementation using eSIM credentials (SM-DP+)
• (Optional) ZKID

Blockchain Development

• Ethereum
• Solidity smart contracts
• Foundry testing (unit, fuzz, invariant)

Android development

• Java/Kotlin
• Android Studio
• (Optional) React Native

Key generation

Android keystore: ed25519 algorithm