diff --git a/ndef/symbols.go b/ndef/symbols.go
index b0b3223..eafafd6 100644
--- a/ndef/symbols.go
+++ b/ndef/symbols.go
@@ -6,6 +6,9 @@ const (
 	// CommaChar define
 	CommaChar = ','
 
+	DotStr  = "."
+	DotChar = '.'
+
 	// EqualStr define
 	EqualStr = "="
 	// EqualChar define