Nevada law allows you to take pictures of people and things that are in public spaces. However, the rules for private spaces are different. If you enter someone’s dwelling and engage in peeping, the penalties for the offense are much harsher if you have a camera or a recorder with you at the time of the incident.
Taking pictures without consent, especially if you use those pictures for commercial purposes or make the pictures public without the permission of the person who was photographed, could also result in a civil lawsuit against you that is brought by the person who was photographed.
In some cases, you could also face very harsh penalties based on the nature of the pictures taken. For example, if you engage in peeping behavior and you take pictures of anyone under the age of 18, it is possible you could be charged with a child pornography offense if the photographs depict the child without clothing or in a sexually suggestive way.