Save your money, avoid the "generators," and pay for the power you use. Your meter is not a slot machine—and the house (Siemens + the utility) always wins.
The "Code Generator" refers to the used by utility providers to issue 20-digit STS tokens. Siemens Cashpower 2000 Electricity Code Generatorl
Tokens are encrypted using with a key derived from the base key and a token identifier. Breaking this mathematically would take billions of years with current computing power. Save your money, avoid the "generators," and pay