diff --git a/internal/guard/client.go b/internal/guard/client.go
index 6f331ac..a6fb0ba 100644
--- a/internal/guard/client.go
+++ b/internal/guard/client.go
@@ -29,7 +29,7 @@ func ListDevices() ([]Device, error) {
 		}
 		d, err := parseLine(line)
 		if err == nil {
-			d.Permanent = rules[d.VidPid] == d.Status
+			d.Permanent = rules[d.Hash] == d.Status
 			devices = append(devices, d)
 		}
 	}
@@ -47,8 +47,8 @@ func listRules() map[string]Status {
 			continue
 		}
 		d, err := parseLine(line)
-		if err == nil {
-			rules[d.VidPid] = d.Status
+		if err == nil && d.Hash != "" {
+			rules[d.Hash] = d.Status
 		}
 	}
 	return rules
diff --git a/internal/guard/device.go b/internal/guard/device.go
index 1715efc..014a0e5 100644
--- a/internal/guard/device.go
+++ b/internal/guard/device.go
@@ -20,6 +20,7 @@ type Device struct {
 	Name      string
 	Status    Status
 	VidPid    string
+	Hash      string
 	Permanent bool
 }
 
@@ -57,6 +58,7 @@ func parseLine(line string) (Device, error) {
 		Name:   name,
 		Status: status,
 		VidPid: extractUnquoted(rest, "id"),
+		Hash:   extractField(rest, "hash"),
 	}, nil
 }