An algorithmic analog-to-digital converter includes a sample-and-hold circuit and an ADC processing unit operating in parallel and sharing a single operational amplifier. A metal pillar has a portion over the top surface of the top dielectric layer. The getter material can be a conductive or an insulating material. In some embodiments, a final segment of the second higher layer packet is encapsulated in a final higher priority data block with a remaining data segment of the first higher layer packet. Example methods may include one or more of reading the data file or data stream from a data source, calculating a value of a property of the data file or data stream, comparing the calculated value with a threshold value to determine whether the file is encrypted or unencrypted, and encrypting files that are determined to be unencrypted.