During recent years, chip-based transactions has been changing from mainly physical, like a chipcard, to mainly virtual, such as a software application on a mobile device. Although such mobile devices are very powerful compared to a conventional chip card, the data interactions with POI terminals must still be compliant with relevant specifications and standards such as the EMV standards.
A computer implemented transaction method is provided that enables a first application to be switched with a second application whilst the transaction is in progress, and without loss of information relating to the transaction. The switching process can be facilitated by either instructing a user to remove an identification device, such as a mobile phone or a chipcard, out of a field produced by a terminal and subsequently return the identification device to within the field produced by the terminal, or turning an antenna of the identification device off, waiting a predetermined length of time and turning the antenna back on again. This enables the transaction to be completed using an optimal application whilst also providing a positive user experience throughout.