Mr. Keith Comiskey:

The costs of antigen tests are typically much cheaper than PCR tests.

For the travelling public it is cheaper to take an antigen test rather than a PCR test. In terms of specifying travel regulations and the rules of travel, particularly to aid colleagues in the airlines and border management, it is necessary to define what a test result might be. I do not think it is possible for a self-administered test to be defined in such terms that could be checked on arrival. It would need to be a professionally administered test by a health professional. That is consistent with the European approach whereby, under the digital Covid certificate, DCC, framework, it is possible to obtain an antigen test and also get a DCC on the basis of that test. People who are travelling between European destinations are able to get a DCC based on an antigen test and use that for travel purposes.