user18655: I'm trying to setup home automation system controlled with webpage stored in SD card of Arduino, I was thinking if it was possible to set a login page, only combination of correct user id & password will be able to access the control page.

user18744: Have you tried to change Arduino Uno board to Arduino Yun board?
Yun has a Linux distribution onboard and you can easy configure a web page to control physical objects.
Here some examples:
http://scuola.arduino.cc/lesson/b4EoRkV/Arduino_Yn_Intro_to_web_server
https://github.com/mat-lo/yun-examples

user18738: Arduino cannot run a web server so it is not possible to do what you want with just using an Arduino board?.
It seems we can run a web server, look at the answer by @Nick Gammon below.
By using a wifi shield and connecting to a local or public web server where your page is hosted you should be able to to do it.
Don't expect to load a full fledged page on an Arduino you have to try posting a few post and get requests to get this working. It will look like a terminal based login.
What is the control page you are trying to do?
If you are ok with spending more money try using a Raspberry pi + Arduino combination.

user10794: I have a page about a tiny web server for the Arduino Uno or similar boards. It simply isn't true that you can't make one, or that a much more powerful processor would be better. There are some limitations imposed by small amounts of RAM, but the library described there decodes incoming HTTP information "on the fly" so it can handle a reasonably large page.
You could put the data to be display into PROGMEM (more information here) or onto an SD card as someone suggested.
The login and password could be stored in EEPROM.

18655: <p>I'm trying to setup home automation system controlled with webpage stored in SD card of Arduino, I was thinking if it was possible to set a login page, only combination of correct user id &amp; password will be able to access the control page.</p>
 18744: <p>Have you tried to change Arduino Uno board to Arduino Yun board?
Yun has a Linux distribution onboard and you can easy configure a web page to control physical objects.</p>

<p><strong>Here some examples:</strong>
<a href="http://scuola.arduino.cc/lesson/b4EoRkV/Arduino_Yn_Intro_to_web_server" rel="nofollow">http://scuola.arduino.cc/lesson/b4EoRkV/Arduino_Yn_Intro_to_web_server</a>
<a href="https://github.com/mat-lo/yun-examples" rel="nofollow">https://github.com/mat-lo/yun-examples</a></p>
 18738: <p><s>Arduino cannot run a web server so it is not possible to do what you want with just using an Arduino board?.</s>
It seems we can run a web server, look at the answer by @Nick Gammon below.</p>

<p>By using a wifi shield and connecting to a local or public web server where your page is hosted you should be able to to do it.</p>

<p>Don't expect to load a full fledged page on an Arduino you have to try posting a few post and get requests to get this working. It will look like a terminal based login.</p>

<p>What is the control page you are trying to do?</p>

<p>If you are ok with spending more money try using a Raspberry pi + Arduino combination.</p>
 10794: <p>I have a page about <a href="http://www.gammon.com.au/forum/?id=12942" rel="nofollow">a tiny web server</a> for the Arduino Uno or similar boards. It simply isn't true that you can't make one, or that a much more powerful processor would be better. There are <em>some</em> limitations imposed by small amounts of RAM, but the library described there decodes incoming HTTP information "on the fly" so it can handle a reasonably large page.</p>

<p>You could put the data to be display into PROGMEM (more information <a href="http://www.gammon.com.au/progmem" rel="nofollow">here</a>) or onto an SD card as someone suggested.</p>

<p>The login and password could be stored in EEPROM.</p>
