How can I prevent others from seeing my photos on a digital camera? How are they saved?

I'll soon have use of a digital camera, but will be sharing the camera with my child who plans to use the camera often with friends. How can I be sure my pictures are not stored on the camera itself, or mixed in with other pictures?

I was told I'll need some type of memory card. Are all the photos ONLY saved on those cards(and no where on the camera itself similar to a computer), which means I would simply use a seperate memory card from my child? Thanks

p.s. I read that digital cameras, have built in computers, and I know on computes, even when you erase or delete things, they can still be retrieved by someone with enough knowledge. Is that not the same with digital cameras?

Yeah, i would say that the best way is to get 2 memory cards. One for you and one for your kid, just remember to set it up on your camera to save everything to the memory card (if they have that option). Because I know that some camera have like a small amount of built in memory, like about 2MB, so when there's no memory card inside, it will automatically save them there. And be sure to label your memory cards too, so they don't mixed up. And get a bigger capacity for you and a smaller on for you kid.

yes you can get 2 cards
an easy way is to transfer the pics to the computer each time
then the card will be empty and ready for your child

Yes, if you choose so in your camera's menu, your pictures will be saved only to your memory card, which you can take out and then put another in for your child's sole use.

To save them onto your computer, you need to go through Control Panel, there is an icon that allows you to do that.

Most cameras save direct to the memory card and do not keep any other data intrinsically. Have a memory card for both you and your child and swap it out each time you hand it over.

After you take pictures, copy them to computer then burn them to CD or DVD as soon as possible. That way you always have lots of free space on the memory card and nobody can accidently erase your picture.