diff --git a/flow.go b/flow.go
index 0fa9432..6a2db4f 100644
--- a/flow.go
+++ b/flow.go
@@ -237,5 +237,14 @@ func (f *KeycardFlow) unpairThisFlow(kc *keycardContext) (FlowStatus, error) {
 		return nil, err
 	}
 
-	return nil, errors.New("not yet implemented")
+	err = kc.unpairCurrent()
+
+	if isSCardError(err) {
+		return nil, restartErr()
+	} else if err != nil {
+		return nil, err
+	}
+
+	f.cardInfo.freeSlots++
+	return FlowStatus{InstanceUID: f.cardInfo.instanceUID, FreeSlots: f.cardInfo.freeSlots}, err
 }
diff --git a/keycard_context.go b/keycard_context.go
index 23d5eba..6abc801 100644
--- a/keycard_context.go
+++ b/keycard_context.go
@@ -360,6 +360,10 @@ func (kc *keycardContext) unpair(index uint8) error {
 	return nil
 }
 
+func (kc *keycardContext) unpairCurrent() error {
+	return kc.unpair(uint8(kc.cmdSet.PairingInfo.Index))
+}
+
 func (kc *keycardContext) getStatusApplication() (*types.ApplicationStatus, error) {
 	<-kc.connected
 	if kc.runErr != nil {