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I'm trying to write a web application which needs to exchange messages with a local Smart Card.
Currently I'm trying to use WebUSB API to connect the Chrome with the smart card reader, but I'm struggling to use the PC/SC specification.
In my researches I found this two topics:
Architectures to access Smart Card from a generic browser? Or: How to bridge the gap from browser to PC/SC stack?
How to send APDU to PCSC reader from web broswer using javascript
Although they deal with the same subject, they have no connection examples.
If anyone has any tips or example of connection I would be grateful.
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Is it possible to use Text Recognition (https://firebase.google.com/docs/ml/recognize-text) for web projects. I'd like it to run the built-in model through images uploaded to the Storage.
From the documentation:
Firebase Machine Learning is a mobile SDK that brings Google's machine learning expertise to Android and Apple apps in a powerful yet easy-to-use package.
So it seems that Firebase Machine Learning is only available for Android and iOS apps, and not for web apps.
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How to secure firebase code,I mean can anybody edit its code through google chrome console like view items or other things or there is any thing to prevent it?I am fairly new and only now the basics.
Your firebase code is sitting with the rest of your website code. I do not believe there is any major issue unless you are using a client side rendered framework for your web application and have left your configuration keys for firebase in the frontend and on top of that your firebase access rules are set to public. Setting the proper firebase rules - you may want to read this: https://firebase.google.com/docs/database/security/
is most important. This applies to all Storage, Database and Authentication.
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I'm working on a chrome extension and I need to get a schedule data from outside of the extension to let the admin broadcast the schedule to the extension users. I wanted to use hapi.js but I can't afford to buy any private server. I did find free website hosting. I thought I would do a minimal website with just a login system and some pages containing the data I would want and make some get request on the extension and extract the schedule on the extension.
Is it okay like a replacement plane for the API?
For almost the same purpose I was using WordPress website with json api plugin. (https://wordpress.org/plugins/json-api/) It is super easy to install and later you can simply run fetch requests inside of your application or extension.
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I read article about WebRTC. I understood that it creates a common platform for real time communication. Can some one answer me that if WebRTC requires credentials and also is there any time limit to use.
It's not a platform. According to webrtc.org, WebRTC is a free, open project that enables web browsers with Real-Time Communications (RTC) capabilities via simple JavaScript APIs.
If you want to develop it just with browser and your js code. http://www.webrtc.org/ has all the information you may want.
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Is it possible to implement webRTC at server side? ie., I want my browser to connect to a http server(tomcat which runs a java based app to stream a video) using webRTC protocol and get the streem from the server?
I think compiling webRTC api and access it through JNI will help. Any other easy directions to do this?
There is now a server-side implementation of WebRTC in Asterisk that should enable that: https://wiki.asterisk.org/wiki/display/AST/Asterisk+WebRTC+Support
I haven't yet looked into it that much so I can't say for sure that it does what you want.
Take a look at Lynckia's Licode Project. It is however, Node.js serverside.