# Decrypting recordings

*Please Note: a valid PRO license is required to carry out the decryption. Each seat of PRO allows you to decrypt data from up to 3 Extenders.* 

To decrypt data from Extender, open Cortex and click on the Tools tab. You will see under this section there is an option to decrypt local data.

![](https://882260898-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LIeRq11UI35TJTLmMuf%2F-LIeRvZqQ-3KpVzLxzyQ%2F-LIeRvziHUhwVBj-kY1p%2Fstartdecrypt.jpg?generation=1532941818915289\&alt=media)

Step 1 : Click to "Decrypt local data" then select input directory which contains the \*.eed files: you'd like to decrypt.

![](https://882260898-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LIeRq11UI35TJTLmMuf%2F-LIeRvZqQ-3KpVzLxzyQ%2F-LIeRvzkNkMDJx9O7xjL%2Fdecryptstep1.jpg?generation=1532941813598565\&alt=media)

Step 2 : Select output directory

![](https://882260898-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LIeRq11UI35TJTLmMuf%2F-LIeRvZqQ-3KpVzLxzyQ%2F-LIeRvzmBC-amYpR6Xrq%2Fdecryptstep2.jpg?generation=1532941813912584\&alt=media)

Cortex will then carry out the decryption and output a \*.csv file for the motion and eeg data into the same folder.

![](https://882260898-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LIeRq11UI35TJTLmMuf%2F-LIeRvZqQ-3KpVzLxzyQ%2F-LIeRvzobixQY-jPIjE4%2Fdecryptstep3.jpg?generation=1532941813969306\&alt=media)