securing your Android phone with a pattern, is a secure way to protect your device. you can set lock screen pattern invisible on Galaxy note 8, note 2, S4 and other Samsung devices by doing as follows
1. Open "Settings" App
2. Go to "Lock Screen" (On some devices, you may need to change tab to find Lock Screen menu)
3. Find "Make Pattern Visible"
4. Marking or Unmarking this option, change the visibility status of pattern