420,000 people die of food-borne disease per year. Moreover, 10 million people will die of antimicrobial resistance by 2050. It’s all about bacteria. It is the origin of life and 5 million-trillion-trillion bacteria are living together with us today. Bacteria are everywhere and every-time. Comparing to this, conventional technologies can detect bacteria only with sampling manner. Because they take long time(several hours up-to days) even with expensive tools. The.Wave.Talk(TWT) developed bacteria sensor, which can do a whole inspection in food factory. Furthermore, the sensor can be minimized and connected to your smartphone to check your water and humidifier.