Automatic card validation
When adding a payment card to MEWS via ChannelManager integrations the provided card should be validated (without charging or preauthorizing) by stripe. As far as I know stripe is able to make a basic validity check and initial estimate of reliability (for fraud prevention) once a card is added. That result should trigger an alert or task to manually check card validity or look in more detail on the respective reservation. This would allow to filter out possible fraudulent reservations at the time of booking.

-
Jean-Philipp SPIESS commented
When adding a payment card to MEWS via ChannelManager integrations the provided card should be validated (without charging or preauthorizing) by stripe. As far as I know stripe is able to make a basic validity check and initial estimate of reliability (for fraud prevention) once a card is added. That result should trigger an alert or task to manually check card validity or look in more detail on the respective reservation. This would allow to filter out possible fraudulent reservations at the time of booking.