If you choose to register your Hop card or set up a virtual Hop card on your Android phone, we will ask for your first and last name and your email address. We will also ask you to choose a security question/answer and a 4-digit PIN to keep your account secure. We use your anonymous travel data (viewed in aggregate with other riders’ trips) to look at broad ridership trends and help us improve our service. And we use your transaction data to help you when you contact us with a question about your account.