As a newcomer to ESET, I must admit that I did find the process of finding and purchasing the right product quite confusing. Looking on Amazon, ebay, etc, there are many different options such as Smart Security, Smart Security Premium, Multi Device, NOD 32, Family Security, etc and not to mention the different year numbers and number of users. In the end I went for the family security as it is good for up to 10 devices. I suppose I could also have purchased 2 x Multi Device licenses if I wanted more than 5 seats, but I wasn't sure whether that would have been more complicated to regiister and activate all my family's devices. The other thing I found a bit confusing was setting up the mobile security on my daughter's mobile, because I wasn't sure whether using one of her e-mail addresses while installing would create any problems while registering the product, but it didn't, so I'm not sure why I couldn't just have provided my own e-mail address at that stage or my eset account e-mail address. Anyway, it's all working fine now and seems to be doing a good job.