B ill Gates seem obsessed with world's population control and family planning. The Bill & Melinda Gates Foundation wants to improve contraceptives. They financially support MicroCHIPS, a Massachusetts biotechnology company, that has an aim to develop the next generation of implantable devices. The tiny chip with an antenna and battery is designed to be implanted under the skin, which stores hormone and releases a precise dose at scheduled intervals. Unlike other contraceptive devices, it does not have to be removed when the woman wants to have children. It can be turned on and off with a remote control.