Coin based mobile battery charger with high security

Nowadays, every people use a Smartphone but in Smartphone everyone getting battery problem so we think for make a coin base battery charger, which can be use in business level. In this system main thing is coin detector and there are many types of coin detector, we use cantilever type sensor in the coin detection. Using cantilever type sensor detect weight of 5 Rs coin and give digital value using ADC and controller check the value and find coin original or duplicate. This system consumes solar power or greed power, basically use solar power greed power is optional when solar power is not available. This type of system can use at public place like bus station, railway station, business point, and also use the rural area where grid power is not available for partial/full daytime and a source of revenue for site providers. And also use as wending machine like chocolate and biscuit wending.