Password protect iPhoto albums when viewed on an iPad

Hello - I use my iPad to showcase work to a range of clients. Curiosity is a wonderful aspect of human nature, but we know what it did to the cat!

Is it possible to create a password protection for albums so I can happily handover my iPad to clients for them to browse their visuals/photoshoots etc. without them being able to open albums with creatives in for other clients.

Thanks

Martin