A system and method for acquiring geometic information from images includes a modulated light source configured to provide light energy at a rate unperceivable by the human eye. The invention also relates to a conjugate wherein a fused cyclooctyne compound according to the invention is conjugated to a label, and to the use of these conjugates in bioorthogonal labeling, imaging andor modification, such as for example surface modification, of a target molecule. The bias current is a function of the supply voltage and the feedback voltage, which is derived from a voltage feedback loop. The oxidation step converts the acyl-hydrazine group into a highly reactive acyl-diazene intermediate which reacts with an \u03b1-amino acid alkylthioester to yield the corresponding peptide \u03b1-thioester in good yield. Distributed and other operating systems, environments and architectures, such as, for example, those using tamper-resistant hardware-based processors, may establish security at each node. The other end of the n number of primary coils respectively connects to an input voltage.