Bypassing R503 Fingerprint Sensor storage limit - Extracting templates for external matching? Hi everyone, I'm working on an IoT access control module using an ESP32 and the R503 fingerprint sensor. The built-in library is limited to 200 templates, but I need to support 1000+ users. My plan is to use the R503 only as a reader. I want to capture the fingerprint, generate the character file (feature set), and use `UpChar` to pull those bytes to my database. When someone scans their finger, I’d pull the candidate templates from my DB, send them back to the sensor’s RAM using `DownChar`, and use the hardware `Match` command to verify. Has anyone done this successfully? Specifically: 1. Is the `UpChar` data consistent enough for 1:1 matching after being stored externally for a long time? 2. Is there a way to use these proprietary bytes with some alternative? or am I locked into using the sensor hardware for the matching logic? I want to avoid transferring full images via UART due to latency.…