This disclosure describes systems and methods for electronically tracking information. Test scan-chains are configured by daisy-chaining instances of the logic block in a transparent manner to user-designed application circuits, which can be designed without any user-inserted test structures or other regard for DFT considerations. The dispenser further includes a plunger lock moveable lengthwise along the plunger. The water swellable yarnsparticles also provide greater surface area which helps to hold gel compound, at elevated temperature, within the tube and thus to prevent the fiber optic ribbons from coming into contact with the walls of the buffer tube, thereby preventing signal attenuation problems.