# Allow extensions with air app

**URL:** <https://forum.kirupa.com/t/allow-extensions-with-air-app/326029>\
**Category:** flash\
**Created:** [November 18, 2011, 5:05pm UTC](https://forum.kirupa.com/t/allow-extensions-with-air-app/326029 "2011-11-18T17:05:55Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![fgat](https://avatars.discourse-cdn.com/v4/letter/f/858c86/32.png) [@fgat](https://forum.kirupa.com/u/fgat)\
**Post date:** [November 18, 2011, 5:05pm UTC](https://forum.kirupa.com/t/allow-extensions-with-air-app/326029/1 "2011-11-18T17:05:55Z")

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I’m developing an air app and I’m going to use a thawte certificate to sign it, but I would like to allow the user to add extensions/plugins at runtime (SWFs with a combination of vector and bitmap and graphics), so each user can customize his app.  
What would be the safest way to achieve this ?  
I was thinking maybe download the extension to the storage folder and load to the app, but would this be a safe approach ? Would there be a way to use my thawte certificate with my extensions ?

I appreciate any help you can give me in advance.