Extend fundamental standard QR code to solve security risk by enbed self designed crypto conponent using festal like cryptography.

Provided security at the expense of a negligible time without any compression.

Redefine Sudoku problem as exact problem and using Dancing link sovle it. Compare to the backtracking soluation, it perform around 10 times faster on average.

Create a simple website that gives a list of pokemon with all related information.  Attributes, types, evolution condition, abilities, specialty. Utilize one to many, many to many relationship tables.

Had features, search, post new pokemon, edit pokemon card...