Smartphones have innovative user interfaces and applications; and significant processing power and storage capacity. And most owners would not ever be without their mobiles. Given those factors, consider a company that you buy products or services from that could benefit using 2D tags. This massive adoption of smart devices has created a huge base of multi-tasking users, and a market for companies to tap and target. Touch-navigate devices running on 3G and 4G networks, combined with innovative technologies like 2D tags (QR Codes) create business opportunities and threats. That is, they create opportunities for competitive advantage while destroying older ones. For example, according to Pew Research, newspapers have seen ad revenue fall 26% during the 2009 and 43% over 2007 to 2010.Take a position: Smartphones can be an asset to a business but should they be allowed in an enterprise? BYOD (bring your own device) is convenient and cheaper but should the enterprise strictly control all devices?

Problem 3: access control pokeygram, a cutting-edge new email start-up, is setting up building access for its employees. there are two types of employees: managers and engineers, and there are three departments: security, networking, and human resoures. each employee works in a single department, and each department is housed on a different floor. managers are allowed access to any floor, while engineers are allowed access only to their own floor. there are three badge-operated elevators, each going up to only one distinct floor. every employee has one badge. pokeygram wants to use the best possible access control method in order to minimize delay for the elevators (a) access control matrix, 1. which of the following would you recommend that pokeygram use: (b) access control lists, or (c) capabilities? make sure to justify your answer. 2. what, if any, would be the benefits (and/or disadvantages) of using rbac (role-based access control) in this situation? keep your solution for this problem limited to 10-12 lines of text.