Do you know what extension he's on? <a href=" http://luisamartelo.com/index.php/writing-conclusion-research-paper/ ">essay compare and contrast</a> Android installation packages are compressed in containers that work like ZIP archive files. Regular ZIP utilities generally prevent you from having two files with the name in one archive but the ZIP format itself doesn't preclude duplicated filenames - so with a bit of hacking and tweaking, you can fairly easily create a utility to build an archive with repeated filenames.