Connect locally from browser

[samuels]

Can I connect to HW from our app (web app, in browser)?

We are using our own browser app as a POS. I want to connect the "Pay by card" button with some devices so customers can pay by Apple Pay (watch, ..). I am talking about physical stores and some physical devices.

I imagine connecting that device through USB to a PC, installing some device's software, and after that, I will be able to start a transactions by calling some endpoint locally (e.g. 127.0.0.1:99999/transactions/start/...). I also need to get a response from the device (payment status).

[JK_Fiber_Art]

Hi Samuels,

I'm thinking that your question is a bit beyond the scope of this Community.  When it comes Techie type concerns, you may want to visit the Developer Community where's there more knowledge and experience.  Many members here are good with business related concerns.  I'm guessing from your post that you want to use your PC to process transactions - this can be done via Square's Virtual Terminal.  There is some info here that may help.  That's about as Techie as I can get.