diff --git a/earthsnake/identity.py b/earthsnake/identity.py
index 25c0e9c..420ed17 100644
--- a/earthsnake/identity.py
+++ b/earthsnake/identity.py
@@ -147,6 +147,10 @@ class Identity:
 
         return f'{self.name} {mnemonic}'
 
+    @property
+    def can_sign(self) -> bool:
+        return bool(self.sign_key)
+
     def sign(self, data: str) -> str:
         """Sign data"""