Abstract: Examples of the disclosure provide a compliance monitoring system suitable for display units in a retail store. A wearable device is configured to be worn by a user while in use. The wearable device may be coupled to a server. The wearable device is configured to capture an image of a product label on a display unit. The wearable device may process the captured image to extract product identity information from a machine-readable portion of the product label. The wearable device may retrieve stored label information from the server based on the extracted product identity information. The wearable device may display the retrieved stored label information in a field of view of the user while the user views a human readable portion of the product label, thereby allowing a compliance comparison therebetween.

Abstract: Examples of the disclosure provide a compliance monitoring system suitable for display units in a retail store. A wearable device is configured to be worn by a user while in use. The wearable device may be coupled to a server. The wearable device is configured to capture an image of a product label on a display unit. The wearable device may process the captured image to extract product identity information from a machine-readable portion of the product label. The wearable device may retrieve stored label information from the server based on the extracted product identity information. The wearable device may display the retrieved stored label information in a field of view of the user while the user views a human readable portion of the product label, thereby allowing a compliance comparison therebetween.

Abstract: An analyte (e.g., glucose) is tested in a sample (e.g., blood or blood-free interstitial fluid) having both the analyte and other constituents (e.g., protein). The analyte has an absorption peak over a narrow bandwidth at a characteristic wavelength. The other constituents have an absorption over a broad bandwidth. The broad bandwidth includes and is broader than the narrow bandwidth. Radiant energy (e.g., IR radiation) is directed at the sample. The energy has a source bandwidth including the broad bandwidth. The sample absorbs a portion of the energy. A remainder of the energy is available for analysis. The remainder is analyzed by filtering the remainder into an analyte portion and a reference portion. The analyte portion contains substantially only the narrow bandwidth. The reference portion contains substantially only the broad bandwidth. The analyte portion and the reference portion are measured and compared to calculate an amount of the analyte in the sample.