The location of the serial number (S/N) depends on the specific Lexar product you own:
Genuine Lexar cards almost always have a unique identification string on the back. check lexar serial number
Sometimes. Many newer Lexar SSDs have a QR code that, when scanned with a smartphone, automatically takes you to the verification page with the serial number pre-filled. However, counterfeiters can copy QR codes, so always cross-reference the number on the sticker with what the website shows. The location of the serial number (S/N) depends
Lexar serial numbers are usually alphanumeric, e.g., LSD128GCB1NL001R or LKNV6001T . when scanned with a smartphone