Open Question: Is secretly taking a woman's picture voyeurism?

[feedcrawler]

I have a foot fetish. Sometimes I secretly take pictures of women feet with my digital camera or camera phone, without them knowing it. I see women with pretty feet in the supermarket and other places and I pull out my phone and start taking pictures. Questions 1.) Is what I'm doing called voyeurism? 2.) Is it illegal? 3.) Can doing this lead to something more serious like secretly videotaping women?

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