diff --git a/pcsc-relay/src/lock.c b/pcsc-relay/src/lock.c
new file mode 120000
index 0000000..78f601e
--- /dev/null
+++ b/pcsc-relay/src/lock.c
@@ -0,0 +1 @@
+../../virtualsmartcard/src/vpcd/lock.c
\ No newline at end of file