We have our own interface for working with the device and API for generating a signature - PKCS # 11 library. The source codes of demo applications are available on github:

• Rutoken Demobank

  Android 5+	https://github.com/AktivCo/rutoken-demobank-android
  iOS 13+	https://github.com/AktivCo/rutoken-demobank-ios

• Rutoken Demoshit

  Android 5+	https://github.com/AktivCo/rutoken-demoshift-android
  iOS 13+	https://github.com/AktivCo/rutoken-demoshift-ios