@LewSales @JamieEveritt23 Moreover, its signal can be blocked by any number of things. Any solid object reduces its range and accuracy. Stone or concrete blocks it almost completely. Metal and water block it completely.
It still needs a big, heavy battery, and you can't charge wirelessly through rubber.
@LewSales@JamieEveritt23此外，它的信号可以被任何东西屏蔽。任何固体物体都会降低其射程和精度。石头或混凝土几乎完全堵住了它。金属和水完全阻挡了它。
它仍然需要一个大而重的电池，而且你不能通过橡胶进行无线充电。