Matthew Dove:Pepper CEO Sings Praises of the ‘World’s Coolest Credit Card’.In:The Fintech Times.22.April 2019,abgerufen am 10.Mai 2019(englisch):„In addition, for each purchase made there is a two-step security process, similar to Apple Pay, which includes a one-time-use security code, backed up by additional verification via Face ID or Touch ID.“