The following, short Digi-Access™ [1] videos demonstrate these authentication solutions and will help in better understanding how easy it is to implement and use.
Links:
[1] https://www.digi-sign.com/digi-access
[2] https://www.digi-sign.com/video/digi-access/strong
[3] https://www.digi-sign.com/video/digi-access/2fa