Add SWITCHfilesender information

pages/merlin6/02-How-To-Use-Merlin/transfer-data.md

@@ -22,7 +22,7 @@ visibility.
   - Protocols using other ports require admin configuration and may only work with
     specific hosts (ftp, rsync daemons, etc)
 - Systems on the internet can access the Remote Access Merlin servers
-  (ra-merlin*.psi.ch) using ssh-based protocols
+  (ra-merlin\*.psi.ch) using ssh-based protocols
 
 
 ## Direct transfer via Merlin6 login nodes
@@ -58,6 +58,15 @@ from the Software Kiosk on PSI machines. Add `merlin-l-01.psi.ch` as a host and
 connect with your PSI credentials. You can then drag-and-drop files between your
 local computer and merlin.
 
+### SWITCHfilesender
+
+**[SWITCHfilesender](https://filesender.switch.ch/filesender2/?s=upload)** is an installation of the FileSender project (filesender.org) which is a web based application that allows authenticated users to securely and easily send arbitrarily large files to other users.
+
+Authentication of users is provided through SimpleSAMLphp, supporting SAML2, LDAP and RADIUS and more. Users without an account can be sent an upload voucher by an authenticated user. FileSender is developed to the requirements of the higher education and research community.
+
+The purpose of the software is to send a large file to someone, have that file available for download for a certain number of downloads and/or a certain amount of time, and after that automatically delete the file. The software is not intended as a permanent file publishing platform. 
+
+**[SWITCHfilesender](https://filesender.switch.ch/filesender2/?s=upload)** is fully integrated with PSI, therefore, PSI employees can login by using their PSI account  (through Authentication and Authorization Infrastructure / AAI authentication, by selecting the PSI institution).
 
 ## Remote Access Servers