Abstract: An access control apparatus having a protective covering configure to cover at least one of a subject or an object inside said protective covering is provided, where an opening is configured to provide access to the at least one of a subject or an object and a covering element configured to selectively cover said opening. A receiving element is provided on the protective covering and an activating device with an activating element is provided external to the protective covering.

Abstract: In one aspect, compositions and methods are described herein for providing a microenvironment mapping platform operable to selectively identify various features, including protein-protein interactions on cellular membranes. In some embodiments, a composition comprises a catalyst, and a protein labeling agent, wherein the catalyst activates the protein labeling agent to a reactive intermediate. The catalyst, in some embodiments, can have electronic structure for permitting energy transfer to the protein labeling agent to form the reactive intermediate. The reactive intermediate reacts or crosslinks with a protein or other biomolecule within the diffusion radius of the reactive intermediate.

Abstract: The invention provides an equipment and a system that addresses the key concerns of eating/drinking in public while minimizing the chance of contamination of the eater and the public in general. The equipment can be a face mask, a face shield or a helmet that completely encloses at least the mouth and the nose of a person while providing intermittent access to the mouth without removal of the equipment. A mouth opening is provided on the equipment which is selectively blocked or unblocked by a covering element moved by a moving mechanism that moves the cover element to block or unblock the mouth opening. The mouth opening is selectively blocked or unblocked based on the distance between an activating element provided on a utensil or a wearable device and a receiving element provided on the equipment.