Ok, I got a Chinese 17" LCD monitor with USB touchcreen. Max resolution is 1280x1024.I use Raspberry 3 Model B with Raspbian OS.
Below are the result from lsusb
Bus 001 Device 005: ID 0930:6544 Toshiba Corp. Kingston DataTraveler 2.0 Stick (2GB)
Bus 001 Device 004: ID 0eef:0001 D-WAV Scientific Co., Ltd eGalax TouchScreen
Bus 001 Device 006: ID 6901:1224
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
I can touch it, and it respond, but the position is very wrong. The question is how to calibrate it for touchscreen bigger than 7" ?