They make use of the contact number like a proxy to transfer income instantaneously concerning bank accounts. If I'm going to send out a Bizum from my BBVA account to my Good friend's account in Santander, BBVA asks Bizum to translate my friend's contact number to his banking account amount, https://raymondusqqe.bimmwiki.com/10372052/helping_the_others_realize_the_advantages_of_tarot_de_jesus