It sounds like you want to set up a keyfob style access requirement, which is a pretty cool idea. Our built-in parental controls do not support that, but if you may be able to find another router out there to suit your needs. Right now the options built-in to the HT2000W that I could recommend are 1. setting and automatic turn-on and turn-off schedule for the devices, blocking certain websites or ports/protocols per device.
So say if you know that the Nexus 7 owner uses lots of data on Youtube, you can set up a Parental Control to block www.youtube.com for the nexus 7 between 1pm-7am on Fridays, Saturdays and Sundays but only from 7pm-7am on weekdays.
Alternatively, you can just configure your modem to only allow the Nexus online from 5pm-7pm Mon-Thurs and 4pm-9pm on weekends.
If this seems like something that might work for you, I can make some examples here in my HT2000W so you can see it in detail.
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During the first twenty days your service is in a "relaxed bandwidth" state, meaning your data allowance is constantly reset during this time. HughesNet does this as a courtesy to allow customers to update or upgrade their devices to current without it affecting what would be their normal monthly data allotment. After these twenty days your data will start being counted normally. The twenty days of data resets are mentioned in the Welcome email from HughesNet.
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