Vishal, the FloJack is remarkably compatible throughout the NFC landscape despite it’s small size and low power consumption.  Check out this image for reference:

You’ll notice that full read/write functionality is currently available for NFC Forum Type 2 and Type 6 tags.    All other tags are supported until the anti-collision routines where the UUID is attained.  So indeed it is possible to read sufficient data from Type 2 and Type 6 tags, but as noted in our spec sheet the supported data rates are:

• iPhone3G & 3GS – 12 bytes/sec
• iPhone4G & 4GS – 31 bytes/sec
• iPad2 & iPad3 – 80 bytes/sec

Therefore, keep these throughput limits in mind when planning for your application.  Hope that helps.