Method and device for preparing data

摘要

The method involves storing data units, an order sequence and a time assignment chart of a basic unit (110), in a user device (120). Time of a day and a date of a user clock attached to the user device are read out, and the time of the day and an operating time assigned to the date are determined based on the time assignment chart. The data units are allocated based on the order sequence, where the data units are assigned to the operating time. The data units are encrypted before transmission to the user device. Independent claims are also included for the following: (1) a device for transmitting and allocating data (2) a computer program product comprising instructions to perform a method for transmitting and allocating data.