Do Brightkite eSIMs support tethering and hotspot use?

Yes — most Brightkite plans allow hotspot/tethering, so you can share your mobile data with other devices like:

Laptops
Tablets
Travel companions’ phones

Please note:

Tethering works only if your device supports it
Some networks may have restrictions in specific countries

To enable it:

iPhone: Settings > Personal Hotspot
Android: Settings > Network & Internet > Hotspot & tethering