Holidaymakers will be required to film themselves taking coronavirus tests after returning to the UK under plans being considered before the school half-term break.
Ministers are planning to scrap the requirement for vaccinated travellers to take a PCR test, costing about £75, two days after their return. The government will replace them with lateral flow tests, which cost as little as £25.
However Sajid Javid, the health secretary, is understood to be concerned that relying on people to declare their results could encourage lying about positive tests.
In Australia, people under self-quarantine are required to take geo-trackable selfies to prove that they are staying at home. Under the scheme, which is being tested in the state of Victoria, people who are supposed to be under quarantine will receive random calls from authorities.