The government is piloting a mobile application for Europeans to gain 'settled status' once the UK leaves the EU.
But problems have been reported with the app, and campaigners say the process could have been made easier.
The Government is facing growing criticism due to problems with the technology. The app is still in testing mode and only available on Android devices, not on iPhones. Campaigners say this is making things unnecessarily difficult.
The Home Office says it is only during this current phase of testing that people need to use the 'Identity Document Check' app, which is only available on Android phones, to verify their identity.
When the scheme is fully live at the end of March, it will be rolled out to all devices and computers.