The ability to enter a mode where the screen is locked with a fixed price on it (for our purposes it would be small amounts i.e. $2)
The ability to add some text or upload a graphic to populate/explain the screen would be great - obviously showing the amount quite prominently.
Effectively we're wanting to use our Terminal to emulate the experience discussed in this article here:
https://probonoaustralia.com.au/news/2016/11/tap-donate-technology-revolutionising-charity-collectin...
And we envision it looking a bit like the unit displayed in the article:
https://probonoaustralia.com.au/wp-content/uploads/2016/11/Donation-Point-Tap.png
Obvious work around is to create a product - just looking for something lower-friction.