diff --git a/packages/ui-extensions/src/surfaces/point-of-sale/event/input/BaseInput.ts b/packages/ui-extensions/src/surfaces/point-of-sale/event/input/BaseInput.ts
index 869c8cf6c..c189127a3 100644
--- a/packages/ui-extensions/src/surfaces/point-of-sale/event/input/BaseInput.ts
+++ b/packages/ui-extensions/src/surfaces/point-of-sale/event/input/BaseInput.ts
@@ -1,8 +1,12 @@
 import type {ConnectivityState, Device, Session} from '../../../point-of-sale';
 
-export interface BaseInput {
+// meta-type data that's automatically included by POS.
+export interface BaseMetaInput {
   connectivity: ConnectivityState;
   device: Device;
   locale: string;
   session: Session;
 }
+
+// required input by all event targets.
+export interface BaseInput {}
diff --git a/packages/ui-extensions/src/surfaces/point-of-sale/input.ts b/packages/ui-extensions/src/surfaces/point-of-sale/input.ts
index 2b759a685..a720a9713 100644
--- a/packages/ui-extensions/src/surfaces/point-of-sale/input.ts
+++ b/packages/ui-extensions/src/surfaces/point-of-sale/input.ts
@@ -1,4 +1,4 @@
-export type {BaseInput} from './event/input/BaseInput';
+export type {BaseInput, BaseMetaInput} from './event/input/BaseInput';
 export type {TransactionCompleteInput} from './event/input/TransactionCompleteInput';
 
 export type {Device} from './types/device';