In what ways can we capture or record our walk in the city or in nature?

Small, portable DIY devices, capable of recording, capturing and transforming the kinetic energy produced during the movement and transform it into the AC voltage, generated by spinning or shifting neodymium or ferrite magnet inside the copper wire coil. This small generator can transform the movement into the the electricity and thus bring a different kind of record. Connected to a static point via a thread the moving object will spin the magnet inside the coil and produce voltage in a period of time during which it is in motion. The AC voltage generated by the device can be subsequently measured, consumed or possibly stored, using a simple small device with diodes for transforming the voltage and capacitors to store the electricity for future use.