diff --git a/README.md b/README.md
index 2686911..4d14e17 100644
--- a/README.md
+++ b/README.md
@@ -5,16 +5,19 @@ Labchain offers a way to securely exchange health records (but other kinds of tr
 It runs on any ethereum-compatible network.
 
 It sends transactions with IPFS hashes using web3js from node to node. 
+In this software two nodes are preconfigured. It sends a transaction to the other node with the ipfs hash for the encrypted
+electronic health record.
 
+( In the production version we use a solidity contract and a 'privacy' blockchain' )
 
 We provided a nice UI with dropzone.js to drop files and make it for the end user very easy to use.
 
 Installation instructions:
 
 Runs on any php enabled (linux) web server. Just drop the files in the /var/www/ directory
-For secure exchange of files ipfs is needed. Install via ipfs.io
+For secure exchange of files ipfs is needed and some ports have to be opened.  Install via ipfs.io.
 
-Web3js is provided, as well as Trezor login (not finalized yet).
+Web3js is included, as well as Trezor login (not finalized yet).