The invention relates to a process for determining the activation of at least one key of a multi-key device. The methods and systems provide robust, reliable first arrival data for component signals of interest, which may be used to estimate formation slowness, characterize formation slowness zones, or act as an input to other processes. The poker vibrator is characterized in that at least parts of the components pertaining to the poker vibrator are arranged in the vibrating housing, the insulating plastic tube or the connector shell. \u2018ZF08-095\u2019 has attractive fruit that ripens from red to black in mid to late July, and has a mild, sweet flavor.