A server receives a verification request sent by a client associated with a recipient of an electronic message to verify authenticity of a sender of the electronic message, where the verification request comprises message data of the electronic message and a salt hash value. Said instrument comprises tactile forceps that are provided with two forked levers and two tactile jaws, each of which is assigned to one of the forked levers. The measured electrical performance characteristic is compared to a target value for the electrical performance characteristic. Once the receiving legacy device is expected to be deferring the network, the extended wireless device can beamform its signal or otherwise vary from the legacy protocol in communications with extended devices. The scotch yoke arrangement includes a two-piece slide mechanism mounted about a cylindrical crank pin and a single piston embodiment is additionally disclosed. The support shaft is rotated to achieve a desired belt drive angle and fixed to the support frame to maintain the belt drive angle.