1. A method comprising: sampling outputs on a capacitive based digitizer sensor over a first refresh cycle; identifying based on the outputs sampled over the first refresh cycle, a first region on the digitizer sensor that is receiving input that was unintended, wherein the input is identified as unintended based on at least one of size and shape of the first region; recording and initializing a time stamp and a location of the first region, wherein the time stamp is configured to indicate a time at which the unintended input is identified; adding the location of the first region to a list of locations of regions classified as unintended input regions, wherein each entry of the list is stored with the time stamp for a pre-defined time period after initializing or re-initializing the time stamp and then subsequently removed from the list after the pre-defined time period; sampling outputs on the capacitive based digitizer sensor over subsequent refresh cycles; identifying based on the outputs sampled over any one of the subsequent refresh cycles, a second region on the digitizer sensor receiving input that was intended, wherein the input that was intended is identified based on at least one of size and shape of the second region and wherein the second region is different than the first region in at least one of size and shape; disqualifying the second region as input that was intended based on the second region spatially overlapping the location of the first region and based on the second region being identified within the pre-define time period after the time stamp; re-initializing the time stamp on the first region based on the disqualifying of the second region; and reporting the second region as intended input to a host associated with the digitizer sensor based on the second region not being disqualified.