How do botcoin ATMs work?
That would not be possible with Bitcoin. Because the founder and operator of bitcoin was anonymous and no one could know what he was doing. Therefore Bitcoin ATMs will not be available. But I believe in the revolution of Crypto, there will be altcoins doing this to beat the bank of the world.
I hope Hashcard and Credits can do this.
Bitcoin ATM's are available not only in the Philippines but in some countries too (better look it up here
https://coinatmradar.com/countries/). There are 10 Bitcoin ATM's and some of it is available 24/7. I've seen an article which stated The ATM imposes a fee amounting to 3% from the bitcoin price and we can buy bitcoin on it where QR Codes appears.