Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not comprehensive enough

After buying the book based on the reviews here, I found the book quite disappointing. It is long on providing historical perspective, appendices on terminology, acronyms and glossaries, but short on substance.Technology coverage is limited to low-level communication protocols and the standard OSI 7-layer model. Those looking for integration of RFID into middleware, business applications and end-to-end architecture will find very little.The size of the book is on the smaller side but uses a lot of print space for photos, which are not useful. Font size and paper thickness are also on the larger side.