First time scanning not detected

[ijat]

Hi, i tried this library and it is great. Good job. Everything works but for the first time scanning my rfid tag, it does not detect. Then if i try second tag, it will be detected and working without any issue from now on. This only happen once each time the app started, so i have to scan one dummy tag to get it working.

I'm not familiar with weigand protocol and I think i missed something. Do you have any idea which part should i check? Thank you.