This open source android project provides a quick panel to display the following information quick; IMEI/MEID, Device Model, Android ID, Wi-Fi MAC, Bluetooth MAC, Android Version, Android Build Version and Screen Density. More features to come soon.

ACCESS_FINE_LOCATION is used to read Wi-Fi SSID and BSSID
ACCESS_WIFI_STATE is used to get your MAC Address
ACCESS_NETWORK_STATE is used to get your SIM State
BLUETOOTH is used to get your MAC Address
READ_GSERVICES is used to get your Google Services Framework (GSF) ID
READ_PHONE_STATE is used to get your IMEI/IMEI

This app does not request the INTERNET permission, so no data is sent without your knowledge.

The source can be viewed here; https://github.com/opt05/deviceid/issues