diff --git a/README.md b/README.md
index 415c4ea..6c07ffe 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ Similar to other [gateways](https://hampager.de/dokuwiki/doku.php#gateways_apps)
 
 A normal account at [hampager.de](https://support.hampager.de/open.php) (select 'Help Topic -> New DAPNET Account with RIC').
 
-A transmitter registered at [hampager.de](https://support.hampager.de/open.php) (select 'Help Topic -> New DAPNET Transmitter').
+A transmitter registered at [hampager.de](https://support.hampager.de/open.php) (select 'Help Topic -> New DAPNET Transmitter') for this purpose. You can't share the transmitter login with e. g. a hotspot. You can specify, that you use the login for a downstream gateway to ntfy.
 
 ### ntfy account