Reliable POS

Hey Folks. I am working as a manager with a retail client who handles B2C for restaurant business here in APAC and North America. I have started noticing that the available POS in the market appear to be saturated with what they have to offer and also they arent much reliable. I have used a couple like Quantic, Square, Toast and some other.

So it made me wonder if there can be a Reliable POS out there or if there is a possibility to build one. We are in the AI era. Wanted some thoughts on this. If you would go with building a new POS which is Reliable and Robust and serves the purpose of your business. What features you would need.

Thoughts are welcome.