Android Question Start with firebase

[3394509365]

I would like to start using firebase, but I have a question.
1-Can google through firebase trace my network credentials?
2-Fire base works even if I'm away from my router, so send me messages on the phone through the service provider?
3-I would like to use an esp8266 with arduino and a gas sensor in the house, can I therefore send messages alert directly to my phone with firebae?

 

[drgottjr]

your arduino sends a message to google which is relayed to your firebase app. the messages don't go directly from your arduino to your phone. any networked device can send a firebase message. only subscribers to the message can receive it. google, as always, stands proudly in the middle - reading, scanning, watching, storing. if you had a spare phone, you could run a little server on it to receive messages from arduino. then your spare phone could send an sms to your regular phone. but then, google would miss you and start looking. if you're expecting trouble from your gas line, maybe you need both solutions to be safe.