Possible Clues:

• Texter's "Later!"
• "Later!" in textspeak
• Texter's "Ta-ta!"
• 'l8r!'
• Texter's "Bye!"
• 'L8r!'
• Texter's sign-off
• Honor for a standout MLB pitcher
• 'Lates!'
• Initials among crooked bankers about to get busted