A sampling tool for isolating and collecting a tissue biopsy includes a hollow sampling cylinder that includes a first end and an opposing second end. To optimize between good performance and sufficient tests to reduce the risk of fraud, a policy is developed based on observation of the users behavior, using data taken at the computer, data from a payment processor or both. The maintenance application performs at least one hardware maintenance operation on the hardware of the computing device during device down time. The attachment structure may include, for example, a reinforced cone.