diff --git a/README.md b/README.md
index 13cf534..b2afc26 100644
--- a/README.md
+++ b/README.md
@@ -125,3 +125,11 @@ with BSL 00.08.35.B3:
 | SHA-256 | `e4d0d171013f847a357eebe5467bcd413ecb41dc01424b7e4ee636538d820766` |
 | SHA-512 | `fed28a7e9643a551789075b79d9b04fa6e8cdca74d783c1c3830ece07e5c9141dda9532b3c442416a1ddab90d752e679c6918c0d5333ac6da9fd23ab6c33d1bb` |
 
+## Proof of concept
+
+The code in `src/main.c` will dump the content of the BSL to `eUSCI_A0` in UART
+mode. Tested on an MSP430FR5994, but no other chips.
+
+By setting the `DUMP_MODE` preprocessor definition to 0, it can instead be used
+as an instruction tracer, accompanied by `logtracer.py`.
+