The short answer is that most people believe it is wrong to access another person's Snapchat without their knowledge and consent.  However, there are a few valid justifications for doing so, such as a parent's right to check in on their kid's online activities.  Included in this is the ability to monitor their Snapchat activity. If you're concerned about your kids' online safety, you can use one of the apps we discussed in this post to gain access to their Snapchat messages.