diff --git a/tools/bcs.js b/tools/bcs.js
new file mode 100644
index 000000000..9069b82c1
--- /dev/null
+++ b/tools/bcs.js
@@ -0,0 +1,8 @@
+const bcs = require('../lib/scanner-genmega')
+const { argv } = require('node:process');
+const device = argv[2]
+bcs.config({ scanner: { device } })
+bcs.scanMainQR('BTC', (res, err) => {
+  if (res) process.exit(0)
+  process.exit(1)
+})
diff --git a/tools/find-bcs-device.sh b/tools/find-bcs-device.sh
new file mode 100644
index 000000000..94a850e89
--- /dev/null
+++ b/tools/find-bcs-device.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/env sh
+for dev in /dev/ttyS*; do
+	echo "Trying ${dev}"
+	timeout 5s node tools/bcs.js "${dev}"
+done