Hi, curious hacker in SA

Firstly I got to congratulate you guys on building this product, I thinks it’s awesome. Will it be able to support my job and open gates, barriers and garage doors without the original remote control?

It completely depends on said gates, barriers and doors.

If the equipment uses IR, LF RFID, NFC or one of the common RF frequencies, then the flipper could probably capture the necessary data and replay it as needed.

There are other technologies and frequencies that those gates, barriers and doors could use that the flipper does not support.
Some gates and garage doors use rolling codes which could prove to be a problem for capture&replay.

Either way, you’d need an existing valid signal to capture first.