diff --git a/src/components/views/auth/LoginWithQR.tsx b/src/components/views/auth/LoginWithQR.tsx
index feb869deaf..68060f9f28 100644
--- a/src/components/views/auth/LoginWithQR.tsx
+++ b/src/components/views/auth/LoginWithQR.tsx
@@ -46,6 +46,10 @@ export enum LoginWithQRFailureReason {
 
 export type FailureReason = RendezvousFailureReason | LoginWithQRFailureReason;
 
+// n.b MSC3886/MSC3903/MSC3906 that this is based on are now closed.
+// However, we want to keep this implementation around for some time.
+// TODO: define an end-of-life date for this implementation.
+
 /**
  * A component that allows sign in and E2EE set up with a QR code.
  *
diff --git a/src/components/views/auth/LoginWithQRFlow.tsx b/src/components/views/auth/LoginWithQRFlow.tsx
index b5daddbe0c..6a6b78a29b 100644
--- a/src/components/views/auth/LoginWithQRFlow.tsx
+++ b/src/components/views/auth/LoginWithQRFlow.tsx
@@ -39,6 +39,10 @@ interface Props {
     confirmationDigits?: string;
 }
 
+// n.b MSC3886/MSC3903/MSC3906 that this is based on are now closed.
+// However, we want to keep this implementation around for some time.
+// TODO: define an end-of-life date for this implementation.
+
 /**
  * A component that implements the UI for sign in and E2EE set up with a QR code.
  *