Can I connect an NGT/NGW-1-USB to my Tablet via USB

USB connections operate on a ‘Master’ and ‘Slave’ relationship. The Master device such as a PC operates the Slave device and can request / control information via the USB Port to and from the Slave. Due to this, most Slave devices cannot operate without a Master (There are a few exceptions).

Tablets and Smart phones when connected via USB are usually Slave devices, and the NGT-1 / NGW-1 is also a Slave device.  Due to both devices being peripheral or Slave devices, they cannot communicate with one another.