diff --git a/100.md b/100.md
index 56b8a91..2c7b8f9 100644
--- a/100.md
+++ b/100.md
@@ -61,6 +61,8 @@ intent.`package` = "com.example.signer"
 
       ```kotlin
       val npub = intent.data?.getStringExtra("signature")
+      // The package name of the signer application
+      val packageName = intent.data?.getStringExtra("package")
       ```
 
 - **sign_event**