I never thought that I would need something like this, but I need to find a supplier for listening devices. I want to be able to monitor what my nanny is doing at my home while she is taking care of my two young children. I am suspecting that she is not doing what she is supposed to do, but I need proof. A listening device may help me get that proof. The safety and well-being of my children are first and foremost, so I need to monitor how our nanny is treating our children.