A biodegradable complex fiber which retains excellent biodegradability and hydrolyzability and has high strength and high melting temperature suitable for practical use and a method for producing the biodegradable complex fiber are provided. Such devices include, but are not limited to, cameras, robotic pantilt heads, video tape players and recorders, video servers and virtual recorders, character generators, still stores, digital video disk players, audio mixers, digital video effects, video switchers, and teleprompting systems. Next, the limiting part, after calculating a limit value L on the basis of the estimated slip ratio \u03bb and estimated driving torque Td, uses the limit value L to calculate a limited torque value TL. Each stiffener is positioned in a corresponding retaining space of the housing and includes opposite first and second portions, and a third portion. The cartridge includes a first shield and a second shield, each having slots where the slots of the first and second shields are aligned in a first verification or calibration mode, and where the slots are not aligned in a normal, seed depositing mode. In one embodiment portable electronic devices are deployed having a universal wallet application and a wallet data file associated with the application.