Scrypt Mining

Scrypt Mining's orgiinal purpose was to allow miners to mine both Bitcoin and Litecoin simultaneously. Additonally, scrypt mining was seen as a more fair process because there would be no advantage given to video card (GPU), FPGA and ASIC miners over CPU miners.
Use of the scrypt algorithm makes the possibility of using FPGA and ASIC devices less liekly because they are more complicated to create and more expensive to produce than they are for SHA-256 mining.  Scrypt hashing scheme is more memory intensive; and thus raises the memory requirements for ASICs and FPGAs which increases the cost of building those cryptocurrency mining devices.
Scrypt Mining Cryptocurrency