Mangalore: Now, a bag that gives robber the shock of his life!

Mangalore: Now, a bag that gives robber the shock of his life!

Vineeth Monis
Pics: Dayanand Kukkaje
Daijiworld Media Network - Mangalore
Mangalore, Mar 24:
One might have read in newspapers about incidents wherein businessmen or bank officials have been robbed of cash they were carrying with them. Looting is an easy way of making money and there are many in the world who are looking to make a quick buck. Carrying a lot of cash is always risky as it makes the person vulnerable and puts his or her life at risk.

An invention by Prashanth Nayak might help ease the minds of such people who have no option but to carry large amounts of cash for some specific purpose. Nayak’s invention provides wireless security for the cash bag by controlling all vital features through RF (RF) communicated remote control. A receiver with all control sections and a 6 volt 4.5 Ah rechargeable lead acid battery will be fitted inside the briefcase and a key chain with a handheld transmitter can be carried by the person.

The bag needs to be looped to any fixed object such as the handle of a table or chair or a bus or train seat. When the Armed mode is activated and the bag is moved or snatched, the loop detection mode detects the open loop and sounds the built-in siren to alert the person.
In case the miscreant still decides to run away with the bag when the siren is sounding, a panic button on the remote can be pressed and the culprit will literally get the 'shock' of his life as instantly, a high voltage current will pass through the apparatus. The remote is effective up to a distance of 100 meters from the bag when it is in the line of sight.
The charge delivered by the electrocution is harmless to human life due to minimum current with a high pulsating voltage.
Despite hailing from a commerce background, Nayak has a passion for inventing new technology. When Daijiworld asked him the reason for this, he said that since childhood he was interested in science, but as he secured less than the required marks in science in the SSLC exams, he had to choose commerce.

"But I nurtured by interest in electronics at the same time. Having studied the principles of electronic circuit design, printed circuit board design, microcontrollers and programming all on my own, I can proudly say that no teacher has taught me the art of electronics. I always believe in taking tasks as a challenge and have designed various commercial products, industrial designs, student projects and hobby gadgets," he says.

What further boosted his confidence was the amateur wireless telegraph station (Ham Radio) license granted by the government of India in 1991. "This (licence) was an additional boost for my thirst for knowledge where I had my hands practically on the principles and designs of radio frequency, transmitters, receivers, and various antennas and transmission systems. I built my own handmade low power transceiver at the age of 19 and to my surprise, the first contact was from a person from Sri Lanka who was more than thousand miles away from my location."
Nayak completed the special cash bag a year ago, but it did not come to the limelight. "I feel people are not convinced about it as it is not a branded product and thus lacks importance,” he says.
Nayak has also developed many other special inventions like this and imparts his knowledge to students. Many of his ideas are used by students in science exhibitions. He is a true inspiration to many students who aspire to be inventors.


Some of his popular designs are:

RF remote (4 channel latching and momentary): 4 channel RF remote where any channel and be programmed to work as momentary or as latching. Highly useful with shutter control, gate automation, and any other such applications.

Automatic wash basin controller: Automatically controls the valve connected to the tap line by detecting the hand in front of the sensor. Sensor has to be fitted inside the wash basin, behind the tap.

Automatic night light controller: (Switches on the lights at 6.30 pm everyday and switches off at 11 pm). No clock and display used. Setting of “On” and “Off” time done with only one button. Can be custom programmed with the source code as per your required time. Highly useful for advertisement displays and hoardings.

Soft starter: Useful in controlling the speed linearly in marble cutting machines, hand drillers and other such power tools. The speed will gradually vary from 0 to full in 3-4 seconds, thus protecting the winding's bearings, and bushes against sudden loading. Unit is connected directly to AC mains and in series with the power tool. No transformers used.

Digital lamp dimmer: This device may be connected to 220v halogen lights and the brightness of the same may be controlled digitally. The circuit has two buttons - pressing one will increase and pressing the other button will decrease the light intensity. Pressing both buttons for three seconds will trigger the light at full brightness. Pressing any one button will return the light to the previous dimmed state.

Microcontroller based quiz display: This project overcomes the difficulties of manual quiz displays used in various games and quiz competitions in schools, colleges, and other similar events where the priority is necessary to be known. This system incorporates the unique facility of keeping in memory the order of priority of the contestants who have pressed the buzzer in ascending order, in many cases the first person.

Pressing the buzzer is detected but next consecutive contestants are not detected and thus the question may arise so as to whom the question may pass in case the first person doesn't know the answer. This project presented here overcomes such dilemma and displays all the contestants in priority, whoever has pressed the buzzer.

Profile timer: Profile timer is basically a multiple on/off timer from 000 to 999 seconds where on and off times can be set anywhere  between these two maximum and minimum limits and will operate on different times set according to different profiles. Timer has a 16 x 2 LCD which will display all the relevant functions during setting and working of the unit. A telephone equivalent keypad will be used to input data of the timings required. A non volatile memory is utilized to recall and load the last used profile during power failure. Each button on the keypad can be individually programmed for different time periods and can be instantly accessed just by pressing 2 buttons. Use full for motor controls, exhaust fan control in factories, bathroom fan/ light control, etc.

Diesel generator remote: This remote controller unit can switch on and off any diesel generator with cranking facility, from a distance with the given RF keychain remote. The status is monitored by a feedback from the genset which deactivates cranking when the generator is already in the running condition. Five attempts for cranking are provided in case the generator fails to start. Highly useful for hostels and old age homes.
Automatic school bell:
This circuit is capable of sounding the bell 32 times a day with pre-set timetable, with short/ long bell options including a real time clock with date for accurate results. All functions are controlled by a 16 button keyboard and 16 x 2 LCD display with backlight, facilitating use in low light conditions. A triac switching section is used to switch on any AC loads like the gong, or an electric bell. All settings including the keypad is protected against unauthorized use with user changeable 4 digit password.

RGB LED lighting controller: A tiny circuit which generates 64,000 plus shades of lighting with the combination of variable intensity levels of red, green and blue LED's. The kit has 26 eye-catching effects, with built in memory.

For more information on his projects, log on to


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Comment on this article


    Fri, Apr 12 2013

    WELL DONE Mr.Prashanth Keep going It is really heartening to know a person with commerce back ground could do such inventions, Passion towards SCIENCE is so deep in u. KEEP GOING

    DisAgree Agree Reply Report Abuse

  • L.Fernandes, goa/mumbai

    Fri, Mar 29 2013

    With blessings for your innovative ideas. Can a device be fitted on a cell phone for women safety who are attacked and molested daily in their life they live in.Incapacite the attacker.

    DisAgree Agree Reply Report Abuse

  • Prashanth Nayak, Mangalore

    Mon, Mar 25 2013

    @ Peace Lover:
    May it be Volatges, Components or Comments, "Positives" and "Negetives" are part of my life and i am experiencing it since i am in Electronics. I always belive in negetive comments makes me perfect while i would love to study more in to the subject with the critics, and try to improvise further.

    Yes Sir..i have heard it and had a demand long back to design one. But the drwaback it self electrocution when the jacket is touched by the micreant and he touches the girl at the same time. Both are grounded and both will have a bad time..

    @Jaimini P.B
    Thank you Sir for the kind appreciation. Infact i cant uproot myself from mangalore due to some personal problems. But i am working on certain project from some companies abroad, and i am working from mangalore and serve any part of the world. after all today we have technology like the Internet, Video chat and Mobiles which make the world smaller.

    Thansk to Dhanpal, Herold and Shalini Madam for the appreciating good words..

    DisAgree [1] Agree [7] Reply Report Abuse

  • Harold D'cunha, Mangalore, India

    Sun, Mar 24 2013

    Well done Mr. Prashant. We wish u good luck in your invention.

    DisAgree [1] Agree [15] Reply Report Abuse

  • Dhanpal M Shetty, Uppoor/Abu Dhabi

    Sun, Mar 24 2013

    Very good invention, keep it up Mr. Nayak

    DisAgree [1] Agree [21] Reply Report Abuse

  • Shalini, Moodabdri

    Sun, Mar 24 2013

    Why support buying from outside countries while we have great talents like Mr Prashanth and many more in our country. We and the government can support such talents in better way to uplift the technical stability of our country. rest we'll have a lot talents migrating due to lack of support and encouragement.

    DisAgree [5] Agree [16] Reply Report Abuse

  • Jaimini P.B., Manipal,Sharjah

    Sun, Mar 24 2013

    Mr.Prashant Nayak..Congrats.If you were in England or US,by this time you would have become World Famous. Hittila Gida Maddalla ! Anyway..good luck, keep going.One day officials from Suitcase company will knock at your door..just wait..

    DisAgree [4] Agree [18] Reply Report Abuse

  • Jacobnelson, Bejai

    Sun, Mar 24 2013

    Similar leather jackets available specially for Girls to protect from Stupid boys which generates high Voltage the moment someone try to molest the Girl.

    DisAgree [5] Agree [17] Reply Report Abuse

  • Prashanth Nayak, Mangalore

    Sun, Mar 24 2013

    @ Jhon Tauro:
    If we still modify the deisgn futher, and install a GPS and GSM module, certainly we can locate the bag anywhere in the world

    @G DSOUZA:
    Now as this is demonstartion of the concept the circuit is kept open and the battery is revealed. We can beautifully cover all the alarm sections in a box and the full box may be installed inside. Rechargeable batteries are used in mobile phones and are always in the vicinity of the heart. After all here they are in a briefcase which is held in hand. Casualties arise mostly due to mishandling.

    The battery used is 12 volts and a high voltage oscillator section is used to boost the same to pulsating volts of 400 volts.

    Thanks ISMAIL.K.PERINJE and every one for the good words and appreciation. Its all your best wishes and blessings from Lord that keeps me going.

    DisAgree Agree [27] Reply Report Abuse

  • PEACE LOVER, india

    Sun, Mar 24 2013

    Congrats Mr.Nayak. Really appreaciate your invention.
    But I am surprised to see some DISLIKES for the comments appreciating Nayak. We can imagine the mentality of those who dislike the motivating comments. GOD BLESS THEM.

    DisAgree [6] Agree [28] Reply Report Abuse

  • John Tauro, M'lore / Kwt

    Sun, Mar 24 2013

    Remote is effective upto a distance of 100 Mts only. Will it be possible to detect and locate the briefcase if the thief succeeds in disappearing with it?

    DisAgree [3] Agree [10] Reply Report Abuse


    Sun, Mar 24 2013

    Amazing!!The technical skills of Mr.Nayak must be encouraged and utilized by engineering firms. He himself show enthusiasm to learn new techniques at home is wondering!!I wish him all the best.

    DisAgree [4] Agree [18] Reply Report Abuse

  • G DSOUZA, Mangalore

    Sun, Mar 24 2013

    Great invention but I have a query. As batteries are used what about the protection of the contents from a fire hazard?

    DisAgree [4] Agree [17] Reply Report Abuse

  • C Sharath, Mangalore

    Sun, Mar 24 2013

    Good invention, but due to its nature might be limited to local uses due to restrictions for the nature of the suticase & its electronics used. Inventions like these & those done by some of our local engineers particularly in the field of Agriculture, to overcome the labour costs & bring the farmers back to cultivate which they have left due to cost issues should be encouraged by the Govt's also. Local talents are going waste without any suitable platforms. Very soon India will have have to import basic agriculture produce as well whcih once upon a time we used to import. Its very alarming situation & we GDP then.

    DisAgree [4] Agree [15] Reply Report Abuse

  • Anand, karkala/Dubai

    Sun, Mar 24 2013

    The battery is of 6v and how come high voltage output which gets shocked his life. Fantastic work done by Mr. Nayak which is appreciative and useful to those lazy guys who are least bothered about their valuables.

    DisAgree [4] Agree [24] Reply Report Abuse

  • Sunil D'Souza, Mangalore / Mumbai

    Sun, Mar 24 2013

    High voltage is generated with help of the small inverter transformer which you can see in the picture along with a transistor oscillator circuit. Similar to the ones used in the old tube type television sets.

    DisAgree [2] Agree [5] Reply Report Abuse

  • Stany Dsouza, Miyar/Mumbai

    Sun, Mar 24 2013

    I doubt whether such bags are allowed by Security at the airports,stations,etc.

    DisAgree [4] Agree [32] Reply Report Abuse

  • Ted, Mangalore

    Sun, Mar 24 2013

    Visit and order these security systems for fraction of the cost delivered to your doorstep.

    DisAgree [4] Agree [19] Reply Report Abuse


    Sun, Mar 24 2013

    Mr Prshanth Nayak has treasure of knowledge skills and multiple scientific inventions which could be taught to generation next.As said by him it was not made in JAPAN/USA/GERMANY that is why he is not getting required publicity and I suggest educational institutions of Engg and other science institutions could make use of his scientific services.Congrats Mr Prashanth Nayak and keep on going.

    DisAgree [10] Agree [73] Reply Report Abuse

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