Security, reliability and how ShopFields is built
ShopFields was built on top of 5 years of experience at Shopify, working directly with the largest and most complicated merchants on the platform.
Behind the scenes, we also use an amazing platform called Gadget.dev - built by ex-Shopify and Google infrastructure engineers to handle high-volume traffic and take care of many issues that come up. It lets us build faster and more reliably.
When it comes to how ShopFields works on the point of sale device itself, we use Shopify's POS UI Extensions. Extensions are deployed to Shopify to run on Shopify's infrastructure. Our app requires a single API call (to load in your fields), everything else is deployed ahead of time. In the rare that something goes wrong with that API request, you will still have a "custom" field available so that you can continue to add custom information to POS orders.
If you still have any questions or concerns, feel free to reach out using the support widget on this page and we can provide any extra details.