Hello @masorx
Just to add the rule to prohibit a future data usage is not enough in general. Always possible to implement a method that solves the offline version of the problem with all future data and then finetune the official online method with predicted data at hidden offline realization as “ground-truth”.
If you really want to solve an online tracking problem, you should invent some method how to strictly hide future data, like at the flatland challenge. But it required something like kernel-competitions at Kaggle.