M Makumbi Well-Known Member Licensed User Longtime User Apr 21, 2020 #1 Please how can i send back secret code to the user to validate app connectivity as it is done by whatsapp after a downloading the app there is a code which automatically comes then after accepting it takes you to another step please help thanks
Please how can i send back secret code to the user to validate app connectivity as it is done by whatsapp after a downloading the app there is a code which automatically comes then after accepting it takes you to another step please help thanks
DonManfred Expert Licensed User Longtime User Apr 21, 2020 #2 Send the users phonenumber to your server, send the secretcode via SMS from your server to the users device. You can use the SMS Retriever Api to wait for the SMS without any permission. the SMS must be in a specific format to get this working. Upvote 0
Send the users phonenumber to your server, send the secretcode via SMS from your server to the users device. You can use the SMS Retriever Api to wait for the SMS without any permission. the SMS must be in a specific format to get this working.
DonManfred Expert Licensed User Longtime User Apr 21, 2020 #3 Alternatively you can use Firebase UI Auth and let the user Authenticate using Phone (all happens automatically). Only works if GooglePhoneAuthentification is possible in your Country. Upvote 0
Alternatively you can use Firebase UI Auth and let the user Authenticate using Phone (all happens automatically). Only works if GooglePhoneAuthentification is possible in your Country.
M Makumbi Well-Known Member Licensed User Longtime User Apr 21, 2020 #4 DonManfred said: Alternatively you can use Firebase UI Auth and let the user Authenticate using Phone (all happens automatically). Only works if GooglePhoneAuthentification is possible in your Country. Click to expand... How can i know wether GooglePhoneAuthentification is possible in my country is there like a list of countries were i can check and see wether my country allows it thanks Upvote 0
DonManfred said: Alternatively you can use Firebase UI Auth and let the user Authenticate using Phone (all happens automatically). Only works if GooglePhoneAuthentification is possible in your Country. Click to expand... How can i know wether GooglePhoneAuthentification is possible in my country is there like a list of countries were i can check and see wether my country allows it thanks
DonManfred Expert Licensed User Longtime User Apr 22, 2020 #5 Makumbi said: How can i know wether GooglePhoneAuthentification is possible in my country Click to expand... Check the Google Documentation, ask Google. Upvote 0
Makumbi said: How can i know wether GooglePhoneAuthentification is possible in my country Click to expand... Check the Google Documentation, ask Google.
Sandman Expert Licensed User Longtime User Apr 22, 2020 #6 DonManfred said: Send the users phonenumber to your server, send the secretcode via SMS from your server to the users device. Click to expand... This is a very common way of doing this, I'd say. DonManfred said: You can use the SMS Retriever Api to wait for the SMS without any permission. the SMS must be in a specific format to get this working. Click to expand... I just wanted to add that instead of using the SMS Retriever API, one could simply ask the user to enter the code they receive in the sms. That's what I do, and it works quite well. Upvote 0
DonManfred said: Send the users phonenumber to your server, send the secretcode via SMS from your server to the users device. Click to expand... This is a very common way of doing this, I'd say. DonManfred said: You can use the SMS Retriever Api to wait for the SMS without any permission. the SMS must be in a specific format to get this working. Click to expand... I just wanted to add that instead of using the SMS Retriever API, one could simply ask the user to enter the code they receive in the sms. That's what I do, and it works quite well.
M Makumbi Well-Known Member Licensed User Longtime User Apr 22, 2020 #7 Sandman said: This is a very common way of doing this, I'd say. I just wanted to add that instead of using the SMS Retriever API, one could simply ask the user to enter the code they receive in the sms. That's what I do, and it works quite well. Click to expand... does that me that i store the secret code on my server then send it to the users phone number. if so what reliable sms api can i use and the cost implications because my fear is that incase the message is not deliver to the user in time then he will think that the app does not work Upvote 0
Sandman said: This is a very common way of doing this, I'd say. I just wanted to add that instead of using the SMS Retriever API, one could simply ask the user to enter the code they receive in the sms. That's what I do, and it works quite well. Click to expand... does that me that i store the secret code on my server then send it to the users phone number. if so what reliable sms api can i use and the cost implications because my fear is that incase the message is not deliver to the user in time then he will think that the app does not work
Sandman Expert Licensed User Longtime User Apr 22, 2020 #8 Makumbi said: does that me that i store the secret code on my server Click to expand... In my case I simply produced a basic hash from the phone number, and once the user entered the sms code I also re-transmitted their phone number to the server. When I received that I did the hash again to verify that the phone number and hash matched. Obviously you could store the code in a database instead, but why bother when it's so simple to do it like this? (For a touch of extra "security" I added todays date to the phonenumber hashed, so their code changed daily.) Makumbi said: what reliable sms api can i use Click to expand... LMGTFY - Let Me Google That For You For all those people who find it more convenient to bother you with their question rather than to Google it for themselves. lmgtfy.com Makumbi said: my fear is that incase the message is not deliver to the user in time then he will think that the app does not work Click to expand... You should do some basic sanity check in the app to see that it resembles a phone number, either by some basic logic or something more advanced, perhaps like https://www.b4x.com/android/forum/threads/library-phonenumbervalid.56377/ That said, some sms messages will certainly fail. If your business model doesn't allow for that cost, you might have a bigger problem. Upvote 0
Makumbi said: does that me that i store the secret code on my server Click to expand... In my case I simply produced a basic hash from the phone number, and once the user entered the sms code I also re-transmitted their phone number to the server. When I received that I did the hash again to verify that the phone number and hash matched. Obviously you could store the code in a database instead, but why bother when it's so simple to do it like this? (For a touch of extra "security" I added todays date to the phonenumber hashed, so their code changed daily.) Makumbi said: what reliable sms api can i use Click to expand... LMGTFY - Let Me Google That For You For all those people who find it more convenient to bother you with their question rather than to Google it for themselves. lmgtfy.com Makumbi said: my fear is that incase the message is not deliver to the user in time then he will think that the app does not work Click to expand... You should do some basic sanity check in the app to see that it resembles a phone number, either by some basic logic or something more advanced, perhaps like https://www.b4x.com/android/forum/threads/library-phonenumbervalid.56377/ That said, some sms messages will certainly fail. If your business model doesn't allow for that cost, you might have a bigger problem.
LucaMs Expert Licensed User Longtime User Apr 22, 2020 #9 Phone number; and other devices (tablets)? Also, right today another app removed by Google because of... ridicolous reasons but it allows you to get the user's phone number? ? Upvote 0
Phone number; and other devices (tablets)? Also, right today another app removed by Google because of... ridicolous reasons but it allows you to get the user's phone number? ?
DonManfred Expert Licensed User Longtime User Apr 22, 2020 #10 LucaMs said: Phone number; and other devices (tablets)? Click to expand... What do you mean? I do not understand the question. Upvote 0
LucaMs said: Phone number; and other devices (tablets)? Click to expand... What do you mean? I do not understand the question.
LucaMs Expert Licensed User Longtime User Apr 22, 2020 #11 DonManfred said: What do you mean? I do not understand the question. Click to expand... I mean that if if you use the phone number to create a key or something else, your method will not work on tablets, since they do not have a phone number. This is if the number is obtained automatically and not directly asked to the user, obviously. Upvote 0
DonManfred said: What do you mean? I do not understand the question. Click to expand... I mean that if if you use the phone number to create a key or something else, your method will not work on tablets, since they do not have a phone number. This is if the number is obtained automatically and not directly asked to the user, obviously.
DonManfred Expert Licensed User Longtime User Apr 22, 2020 #12 LucaMs said: since they do not have a phone number Click to expand... Phoneauthentification and SMS Retriever Api will not work on such Tablets, correct. I do have a Tablet with SIM Card. Here it does work surely. Upvote 0
LucaMs said: since they do not have a phone number Click to expand... Phoneauthentification and SMS Retriever Api will not work on such Tablets, correct. I do have a Tablet with SIM Card. Here it does work surely.
