Adding alt statements to photos to be read by tts

How can I add alt statements to uploaded photos so the photos can be read by tts software?

Thanks,

Dan

I was also curious about this so was hoping someone would answer. Since no one has so far, I will throw out my best guess.

I am thinking you would need to find the .html page that handles the viewing of the photo and add an "alt" variable (something g like __alt__. Not sure what page but probably in photos module under templates. Then you would need to add the variable to the section of code that handles sending the variable to the .html file. Maybe BxPhotosTemplate.php.  

The hard part would be adding the field to the photo add form as well as an alt field in the bx_photos_main table in the database. That would be my best guess based on how I have added new fields to other modules. But not 100% sure if this will work for you.