QUESTIONS AND ANSWERS:
Yes, you can, but in one direction only: it’ll allow you to provide information, however, you won’t be able to access other people’s data with this device.
Every response is encrypted in such a way, that only the requesting party can decrypt it. You don’t need to worry, that your response can be “overheard” by anybody else around. On the other hand, there is always a certain (quite small) possibility, that someone will try to request your data at the same time as a legitimate person. Anyway, if you get several simultaneous requests, you never know which is which, thus, it’s better to refuse all of them in this case.