Lots of homeless people may end up having to sleep on the streets and Winter time can be particularly tough. A German-based team is trying to tackle this head on. It's installed sleeping pods across the German city of Ulm to provide the homeless with emergency shelter at night. The team ... consists of six business people from Ulm with expert knowledge in designing and developing products. The pods, which are known as Ulster Nests, are made from wood and steel and are both windproof and waterproof. They're designed to keep up to two people protected from the elements, including rain, frost and humidity. However, the creators have stressed that the capsules aren't an alternative to staying in proper overnight accommodation, especially as the city of Ulm can reach very low temperatures. The sleep pods have also been fitted with solar panels and they even come complete with enough room to house users' belongings. They've been fitted with sensors which can monitor temperature, humidity, smoke and carbon dioxide levels and an electronic verification system so those using it can lock the capsule from the inside. They also have lighting, an alarm signal buzzer and a ventilation system. There are no cameras in the pods to protect people's privacy. However, when the doors are opened, this triggers a motion sensor which lets social workers who check the pods know they've been used so they can get them cleaned, and so they can also provide help to those who might need it.