3rd may 2014 , MNC bank
mr. Pandey ,the treasurer of MNC, goes to open the safe to deposit the latest stock of money and assets that have just arrived. he crosses the corridor till he enters a narrow area leading to the safe,he is about to put the key in the lock but suddenly Shyam ,the peon, crashes to him with a tray of tea cups.The cups shatter , the tray flies away, Mr. Pandey falls on the floor and so does Shyam.
‘are you blind ?’
’sorry,sir!’
‘wat sorry, you soiled my shirt …. now what are you waiting for! lift your cups and get lost’
Mr.Pandey is in a really spoilt mood but Shyam smiles , he just got the safe key impression on a wax cake!!
7th May2014 , MNC bank ,1:00 AM
Three shadows approach the window, the window has impedence alarms on them , even a minor fracture could trigger it. one shadow bends down , plays with the power sytems and sets off the alarm, another cuts through the glass silently
they approach the safe , now it’s the third shadow , he plugs in the key, everyone is exicited, they are about to gain assets woth crores, but wait a secound , the key does not work ,it’s stuck
‘are you sure you copied the right key’
‘yes ‘
‘now what?’
suddenly a alarm starts ringing ,auxillary power systems takeover.
‘RUN!!!’
the shadows dart into the darkness and dissapear.
8th May2014 , MNC bank ,evening
police stands with three handcuffed men , Shyam the peon , an ex-security guard and a wanted burglar ,the copy key is siezed and everyone is baffled execpt Mr. Ray the chief security engineer who is smiling at his victory.
’so what should we do with this copy sir ‘ a police asks Mr. Ray.
‘your wish , if you want throw it away’
‘but sir wont it pose further thret to the bank if not destroyed’
‘do you think this key can open the lock ‘
‘it’s a exact replica of orignal and as far as i know MNC still prefers mechanical locks over digital ones’
‘the secound part of your statement is right but not the first ,it is mechanical lock but it’s key cant be copied. i’ll show you some thing , come with me.’
he brings out a key which looks totally different than the safe , inserts in the lock and opens it! Even more baffled people.
‘this is what we call a mirage key’ he announced,’ it’s a key made up of shape memory alloys which is given a form at some temprature, then it is brought to room temprature and then given another arbitarary form by deforming it. The lock when opertated upon heats the key to that temprature.’
some understood, some didn’t but everyone heard ,mesmerized.
so again
technology saves the day 
[statuary warning:artists [mine] impression ,this thing does not exist in form depicted in the picture or explained in the text ]
