This document presents a proposed methodology for helping visually impaired individuals identify Indian currency denominations independently. It involves using a simple, locally-fabricable device that senses the number of dots along the edge of a note to determine the denomination. Notes have a unique number of dots corresponding to their value, from zero dots for 1000 rupee notes down to four dots for 10 rupee notes. The device costs approximately 2 rupees, is very portable, requires no batteries or technical skills, and allows identification of any note value. It provides an affordable, effective solution unavailable currently. Future improvements could include printing notes with Braille identification.

1. Abhilash Kumar
Mano C.
Mohit Kumar
Prashant Prazapati
Indian Currency Note
Denomination Detection
Methodology for the Blind

2. Introduction
• Kapil Kumar, a visually impaired PhD scholar, says, "I have to take help from friends and
relatives to know the value. I keep Rs 10 notes in my trouser pockets and the higher
value notes like Rs 100 or Rs 500 in my shirt's upper pocket to distinguish between
them."
• The country's visually challenged, in addition to several other challenges, face difficulties
in distinguishing currency notes. This is because they have to depend on sighted
strangers they come across for assistance. They often get cheated by shopkeepers in
everyday transactions even before they know it.
• In contrast to the West, which is characterized by technological advancement and a
greater degree of awareness, our nation hasn't leveraged the resources at its disposal to
come up with an effective, cheap and user-friendly solution for the problem.
• The visually challenged have, for long, relied on naive and crude methods to differentiate
currency denominations. For the most part, this comes only with experience, and so may
not always be reliable.

3. Existing Technologies
Pocket Money Brailler
Pros: Small, plastic pocket money brailler lets you easily identify paper money
independently
Cons: External assistance needed and cannot be used independently by the blind

4. Bank Note Reader
Pros: Designed to assist visually impaired, blind, and deaf-blind people
identify Canadian bank notes
Cons: Battery-powered; bent and wrinkled money. Depends on note
orientation, expensive, not easily available

5. Special applications for mobile phones with a camera
Pros: Readily available
Cons: Battery-powered, depends on note texture, expensive, requires use of smartphone

6. Rupees twenty : Size 147 x 63 mm
Indian Currency Notes

7. 177 mm
65 mm 10 mm 10 mm 10 mm 5 mm
Length of pencil =
length of Rs. 1000
note = 177 mm

13. 177 mm
Complete overlap
=> Rs. 1000 note

14. 167 mm
1 dot sensed =>
Rs. 500 note

15. 157 mm
2 dot sensed =>
Rs. 100 note

16. 147 mm
73mm
Sensed 3 dots => 50
or 20 note.
Go to test 2
Test 2 : vertical test
Dot overlapped
=>50 note

17. Sensed 3 dots => 50
or 20 note.
Go to test 2
Test 2 : vertical test
Dot sensed =>20
note
147 mm
63mm

18. 137 mm
4 dot sensed =>
Rs. 10 note

19. Methodology
Vertical Test
Dot sensed => Rs. 20
Dot not sensed => Rs. 50
Dot(s) Note Identified
0 Rs. 1000
1 Rs. 500
2 Rs. 100
3 Rs. 50 or Rs. 20
4 Rs. 10
Dotsincrease
Valuedecreases

21. Advantages of this method
• It can be locally fabricated
• Very, very cheap (~ Rs. 2)
• Readily available everywhere
• It can identify all currency denominations
• Very handy and easy to carry
• Doesn’t need much getting used to
• Safe to use

22. Looking Into the Future
Braille Printed notes
Pros: User-friendly, external assistance not
required
Cons: Note might disintegrate with time

23. Thank you!