Abstract: A method for operating a database includes receiving, from a user, data and an instruction to store the data in a key-value based database, determining a context of the data, selecting, according to the determined context, a data write routine, writing the data and its context to the database using the selected data write routine, and writing the data to a cache associated with the database. In addition, indexes may be created in the database and cache separate from the native indexes of the database and cache.

Abstract: A system for authenticating a user at an automated teller machine (ATM) includes an ATM and a server. The ATM captures a facial image of the user in response to a request to conduct an ATM transaction. The ATM further analyzes the captured facial image and transmit facial image data to the server. The server, upon receiving the facial image data, compares the received facial image data with reference facial image data for similarity. If the server determines that a level of similarity between the facial image data corresponding to the captured facial image and the stored reference facial image data is at or above predetermined threshold, the ATM authenticates the user and dispense cash to the user.

Abstract: A system for authenticating a user at an automated teller machine (ATM) includes an ATM and a server. The ATM captures a facial image of the user in response to a request to conduct an ATM transaction. The ATM further analyzes the captured facial image and transmit facial image data to the server. The server, upon receiving the facial image data, compares the received facial image data with reference facial image data for similarity. If the server determines that a level of similarity between the facial image data corresponding to the captured facial image and the stored reference facial image data is at or above predetermined threshold, the ATM authenticates the user and dispense cash to the user.