Steve Balcombe said:
AvTvM said:
1. serial number on every product. prominently. non-removable.
Every Canon lens I've owned has a serial number on the body or mount, engraved/laser etched, not printed. (I agree it would be helpful if they were easier to read.)
AvTvM said:
2. date code on every product
What would that achieve? Just copy a date from one genuine lens.
AvTvM said:
3. chip + protective firmware in every product,
Actually you previously said: "3. Serial # and Lens Date Code in embedded lens chip firmware".
The serial number *is* embedded in the firmware. I haven't checked if this is true for every model, but I've seen it many times in EXIF data.
The date code would be pointless.
AvTvM said:
4. fully sealed packaging
Good idea, they probably don't have Sellotape in China.
2 unique identifiers per copy = similar to 2 factor authorization = makes it harder to counterfeit. Plus the date code on lenses [should also go on cameras please!] is/was REALLY useful for informed customers, both new and even more so for 2nd hand lens transactions (buy & sell).
Counterfeiters then have the choice to
1) put nothing on lens, no S/N, no Date Code = easiest and cheapest to produce, but easily identified as fake
2) put the same 2 numbers on every lens = easy and cheap to produce, but warning notice will be very specific
3) put 2 unique numbers/codes on every copy they make = more effort, time, money. Also: WHAT numbers and codes to chose? Makes it easier to provide specific warning to potential buyers.
Just think if you were trying to counterfeit Canon lenses, which approach would you chose? What are pros and cons ... if you imagine you are Canon, do the same, just think about exact opposite.
S/N in firmware: yes for newer lenses. Don't know if all or not. No idea for 50/1.8 II ... don't have one in possession. But there are reports about S/N in EXIF being "wiped" = only zeroes ...
PS: if it were useless, why do most serious currencies have unique serial numbers on every banknote? Even the pretty weakly counterfeit protected US dollar notes ... https://www.moneyfactory.gov/resources/serialnumbers.html
PPS: no, neither Neuro nor his daughter/s could easily counterfeit all 4 items combined i listed. Well Neuro just might, he is a resourceful type ... ;D