Phantom Spark Tracker!

This morning I got up, said my Long Obligatory Prayer (love that prayer) and got ready to take the dogs out on their first daily walk. We don't have a fence around our yard so I got into the habit of taking them twice a day for at least 45 mins and often over an hour. This village has great areas to walk and I have lots recorded on my mp3 player to listen to. So the walk is a given and I have a Spark activity tracker that I love to have record my every step. Are you with me so far? This is where it starts to enter the realm of the twilight zone. When I checked my nightie to take the tracker off of it and put it on my left sock for our walk it was NOT there. Oh no, she says!! I checked all logical places and no tracker. So off I went, had a good walk and kept my eye open if possibly it had fallen off my clothes yesterday on a walk. I thought about it a bit and decided if I don't find it I will steal hubby's tracker. He is having so much difficulty walking he doesn't use it anyway. So then I came home. I was still in the mood to walk more, it was so nice out but our older dog tugged me the last steps wanting to go home to his nice warm couch . He is showing a few indications of his age. At home I did a bit more looking around for the tracker. I even very carefully cleaned up my desk. On it, in it, around it, under it. NO TRACKER! I checked my email after getting breakfast for hubby and I. When I went to my START page I expected to see 000 for steps but lo and behold it registered almost 4000 steps. And just now I got a notification that it just uploaded again. WHAT IS GOING ON????? Now I checked my entire person in case it is bizarrely hanging on to me somewhere. I even checked the two dogs in case somehow they have the tracker on their collars. It just gets stranger and stranger! I have no idea what is going on. For the tracker to upload onto the computer program it has to have steps on it! For it to have steps on it, it has to have gone somewhere. Stay with me folks! I have even checked my hair I am that desperate. Can anyone explain what is happening here?