I love Xnspy. I have it for my fleet business. It's the perfect solution for anyone who has to monitor their riders/drivers. There are GPS tracking devices available, but they are different; easy to manipulate, not to forget. But, with Xnspy (an app) installed on a phone, you can monitor your rider's location all the time. Plus, you can read their texts, etc., which adds to the safety that you ask for. I must say, it's actually so good that I am motivated to write this review.