Thedocumentcouldtaketheformof a vaccinecertificateorproofofcovertstatusontheNHSMobileappcouldbemodifiedtocarrythatinformation, butMrJohnsonwaskeentoemphasizetheconsiderabledifficultiesinvolvedonitisanideathatheandotherministershavedismissedseveraltimesinthepast.
Thefirstminister, NicolaSturgeon, hasunveiledwhatshecalled a deliberatelycautiousstrategy, with a phasedreopeningofftheeconomymoreinScotlandinjust a moment.
Butthere's a lotmoreworktobedonetherearetechnicalquestionsabouthowyoumakesurethatthatconfidentialmedicaldataissafeandsecure, andpracticalquestionsabouthowyoumakesurethatthepassportisavailabletoeallandacceptablebyall, notjustnationallybutinternationally.
Weknowthatmajorairlinesarealreadysayingthey'regoingtodemand a vaccinecertificatetoflytocertainplacesoncountrieslikeGreeceareencouragingtheyoutointroducethevaccinecertificatefortouriststogoonholidaythissummer.