Viewing your picture from your mobile devices (iphone,ipad,android,blackberry,etc.etc.) is much more easier now. No slideshow software, no apps to download and no code to learn.

Just adding one simple link to your thumbnail picture page, and the slideshow of your pictures is ready.

 <a href="http://www.tgpslideshow.com/auto.html">Play Slide Show<a>
 

Example 1 Just a bunch of picture files: before, with one simple link.
Example 2 thumbnail galleries: before, with one simple link.
Example 3 thumbnail galleries: one simple link with fancy button. More fancy buttons for your galleries.

You might want to have QRcode(2d code) to replace the button image to make it even easier for your mobile viewers. Again, no software, nor apps or coding. Just another simple image link.