diff --git a/src/git.xdrm.io/schastsp/client/client.go b/src/git.xdrm.io/schastsp/client/client.go
index cb2061e..bdb8347 100644
--- a/src/git.xdrm.io/schastsp/client/client.go
+++ b/src/git.xdrm.io/schastsp/client/client.go
@@ -140,14 +140,21 @@ func (c *T) Receive(r io.Reader) error {
 
 
 
-/* (5) TMP
+/* (5) Returns a synchronisation key (first server connection)
+*
+* @return key<[]byte>				Synchronisation key
+* @return err<error>
 *
 ---------------------------------------------------------*/
-func (c *T) TMP() []byte {
-	hash, err := c.key.CurrentHash()
-	if err != nil { panic(err) }
+func (c *T) SynchronisationKey() ([]byte, error) {
 
+	/* (1) Get current hash */
+	hash, err := c.key.CurrentHash()
+	if err != nil { return nil, err }
+
+	/* (2) Decrement key so 'hash' is valid */
 	c.key.Decrement()
 
-	return hash;
+	/* (3) Return key */
+	return hash, nil;
 }