In-store loyalty on shopify POS

[ioannouc]

I am looking for a loyalty program to work both on the POS and on the website. The programs that I found only accummulate loyalty to customers who enabled their online account, for the rest I haven't found a program to reward them (ie for having a phone number registered and no email through the website). 90% of my customers are only giving me their SMS details so they are all missing out from in-store POS loyalty. Anyone facing this can suggest a solution?