diff --git a/README.md b/README.md
index 6b1bac8..4342cd0 100644
--- a/README.md
+++ b/README.md
@@ -4,3 +4,7 @@ provides `contact` functionallity for solanaceae code.
 
 relies on [EnTT](https://github.com/skypjack/entt)
 
+## Contact Implementer Notes:
+
+When adding a new contact, make sure to check for existing contacts of the same `ID` component first and merge into it instead.
+