The NHS Covid-19 app is set to be updated from August 16 to allow double jabbed people to add their vaccination status to skip isolation.
The NHS Covid-19 app currently sends isolation notices to close contacts of people five days prior a positive test, but this will be reduced to two days.
Transport secretary Grant Shapps has said the NHS Covid-19 app may need to be updated in line with coronavirus restrictions easing on July 19.
Grant Shapps confirmed the app will be used a Covid-19 passport to prove vaccination status, or negative test, before going on holiday.
The update to the NHS Covid-19 app is due to be rolled out before venues including non-essential shops, gyms and outdoor hospitality open on 12 April.
A developer of the NHS Covid-19 app has said it is a “highly effective” tool to help control the spread of the virus as the UK exits lockdown.