Abstract: Screen capture mitigation is disclosed. The presence of a first finger is detected in a first area of a display. In response to the detection, content id displayed. A determination is made that the position of the first finger has changed. A determination is made that the distance by which the first finger has changed position exceeds a tolerance. The content is ceased to be displayed in response to the determination that the tolerance has been exceed.

Abstract: A method of compressing gas using the same gas as the working fluid, using a compressor comprising a reciprocating piston type compressor, a driving cylinder and a driven cylinder. The piston type compressor receives low pressure gas and fills the driven cylinder to a medium pressure target. A valve then directs the output from the piston type compressor to fill the driving cylinder, creating sufficient force to drive the connecting rod between the cylinders fully toward the driven cylinder. The connecting rod force compresses the gas in the driven cylinder and forces it out through a one way valve to a storage cylinder. A valve then directs the piston type compressor to fill the opposite side of the driving cylinder and the driven cylinder, forcing the connecting rod to retract. This cycle is repeated until the final output target high pressure is achieved in the storage vessel.