Interval Inference Mode (iiM) is a free update for the FINIS Swimsense® performance monitor, freeing you from having to manually press the “pause” button after each repeat. Simply press START at the beginning of your workout and STOP at the end, and the Swimsense® will automatically register all intervals and rest period, along with other metrics like distance, stroke type, splits, stroke count, DPS, stroke rate and SWOLF. It doesn’t like sloppy finishes and poor streamlines though, which is an interesting ‘nagging coach’ addition to the rest of its features:

We have outlined these rules to get the most accurate readings of iiM:

Rule 1: Push Off Strong – Try to push off and streamline for at least 2 seconds on each wall

Rule 2: Finish Strong – Even if you aren’t finishing your interval with your Swimsense arm, it is still important to have a good finish into the wall so that the time can be accurate. Just like a coach, the Swimsense is now timing your intervals, so you better not finish short!

Rule 3: Be Still Between Intervals – After a few seconds of non-swimming, the screen will automatically pause and invert when you are resting. However, you should try and stay as still as possible so that excess motion isn’t confused for swimming. A suggestion would be to put your Swimsense hand or wrist on the wall to hold it still.

Rule 4: Have At Least 3-5 Seconds Rest Between Intervals – The Swimsense needs this time of stillness between intervals to know that you have stopped swimming. Otherwise it will think you are just doing a very slow turn.

Via finisinc.com