Skip to main content

Android's Locking Pattern














Recently there was so much talk about the locking feature that is present in Android phone.So I thought to check it out.Unlike other phones which require a four digit number for unlocking "Android" uses an innovative approach to lock your phone and prevent accidental dialing.It puts nine dots arranged in a square pattern (as in case of a grid)on the touch screen along with the caption "Draw pattern to unlock".

A pattern can be anything with the following constraints::
  • It needs to contain 4 dots.
  • Once a dot is lit,it can't be used again.
  • You can use one or several "knight moves" such as [0 5 4 2]
  • You cannot go over an unlit dot without lighting it.For example, the pattern [0 2 1 4] is illegal, because moving your finger between 0 and 2 will light 1.
  • Once a dot is lit, you can use it to reach another unlit dot. For example,both [0 4 3 5] and [0 4 5 3] are legal.

Kind of tricky .Isn't it?

Also some people using the phone have noticed that the repeated locking-unlocking process on the touchscreen interface may leave traces so that the unlock password can be guessed at some of the time.Solution to this problem from user side is to wipe down the screen whenever the phone is locked and there should be the alternate traditional locking system in the phone and this can be made an opti
onal service for the reluctant users.Like all other Google products this is also in its Beta stage and there are chances for the improvement.You can also refer to this video and the links for more information.





Links to check::

Tech Crunch
Beust

Watch out these videos::

Android pattern
Unlocked Google phone

Comments

Popular posts from this blog

T Shirt Quotes related to Computers

Last week while searching for some computer related quotes for T Shirt I came across certain quotes that I thought were very good.So I thought why not share these quotes with you.So here are these quotes,pick the one you like or if you have any of your favorites then do share it with us.Here is the list.. "Programmers don't byte, they nibble a bit" "To iterate is human, to recurse divine" " first 90% of the code accounts for the first 90% of the development time. The remaining 10% of the code accounts for the other 90% of the development time" "99% of all girls are beautiful, the rest 1% are in my college "ASC!! a stupid question,get a stupid ANS!" "In cartooned form Atom1 - I have lost an electron. Atom2 - Are you sure? Atom1 - I am positive." "There's no place like 127.0.0.1 (“Home” for the non-geeks)" "YouTube(logo) myspace(logo) and I'll Google(logo) your Yahoo(logo)." " I'm a progr...

HTTP AND HTTPS-A Comparison

Uniform Resource Locator(URL) URL strings consist of three parts Network protocol Host name or address File or resource location These substrings are separated by special characters as follows: protocol :// host / location URL Protocol The 'protocol' substring defines a network protocol to be used to access a resource. These strings are short names followed by the three characters '://' (a simple naming convention to denote a protocol definition). Typical URL protocols include http://, ftp://, and mailto://. Now check out the URL of this page (the one that is displayed in the address(navigation) bar).What does that say ?What we are going to discuss is HTTP and HTTPS which have a role to play in our follow up post... HTTP: HyperText Transfer Protocol Used by browsers for fetching Web data from servers. Because of its universal availability (e.g., firewalls don't interfere) has become widely used as a general-purpose protocol for network communication. Simple ...

Digg Source Code has a "Secret Message"

Recently I came to know about this, the homepage of Digg contains a "Secret Message" . This secret message is in the source code of the Home Page of the website in the form of a comment at the very bottom .After analyzing the code it seems that some physics-lover has worked on the code of the website.The message is ::: This line is a comment and thus not visible on the website but can easily be seen in the source code of the homepage.These are not just random numbers but are a result of very smart physics work done at the Digg labs. What is the significance of these numbers ? Take a guess (Hint :: Relate these numbers to physics)... OK,here is the answer..... 2.01355321270u :: This is the atomic mass of the hydrogen isotope known as D euterium. 137.03599911 :: This is a complicated one and really a geek in physics can figure this out.This is I nverse of the Sommerfield fine-structure constant. 6.6742x10-11m3kg-1s-2 ::The last two numbers are the same.This one is v...