Embodiments of the invention provide methods and apparatus for transferring information from a sender to a receiver, a symbol is selected out of a plurality of symbols representing the information, wherein each of the plurality of symbols representing the information comprises a number of digits, the number of digits equaling a number of parallel lines coupling the sender and the receiver. The digits of the selected symbol are sent from the sender to the receiver, wherein, via each of the number of lines, a signal representing one of the number of digits of the selected symbol is transferred. In the step of selecting a symbol, the symbol is selected such that the symbol differs from a lastly transferred symbol by one digit.