Sounds very much like the Vipps system we have in Scandinavia, particularly Norway, with the addition of something like the Android Voice Notify app which reads

Sounds very much like the Vipps system we have in Scandinavia, particularly Norway, with the addition of something like the Android Voice Notify app which reads Android notification. My mobile phone has been doing this for years. Whenever I receive a payment it reads it out to me. No need for any new devices.