| hi .. 
Im Saanina [Abdulrahman Muhammad ] 
this class used for security  as second check ..
u can used it as any experssion like as verification code .. etc ..
i hope its usfull ... 
if u face any problems .. call me at saanina@gmail.com 
if u hate Gmail .. call me at we0ew@hotmai.com 
best wishes .. 
Saanina [ KSA]
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